NEW K-8 Math Lessons Now Available

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# NEW! Fun Math Lessons

For Grades K-8. Try it free.Grades K-8. Try it free.Key Stage 1 & 2.Grades F-6. Try it free.

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scale drawings (using scale factor), categorygrades68, scaling, scale, scale drawing, scale drawings, scale factor, scale factors, scale Grades 6-8 Scale Drawings (Using Scale Factor)

mental math within 100, categoryk2, mental math, head, brain, mind Grades K-2 Mental Math within 100

surface area using nets (prisms & pyramids), categorygrades68, surface area, area Grades 6-8 Surface Area Using Nets (Prisms & Pyramids)

multiplying fractions by whole numbers, categorygrades35, multiply, multiplication, multiplying, multiplied, fraction, fractions Grades 3-5 Multiplying Fractions by Whole Numbers

intro to algebraic expressions, categorygrades68, algebraic, algebraic equation, algebraic equations, algabraic, algabraic equation, algabraic equations, expression, expressions, expresion, expresions, algebra, algabra Grades 6-8 Intro to Algebraic Expressions

powers of 10, categorygrades35, ten, 10, power, powers, multiplies, exponent, exponents, exponential Grades 3-5 Powers of 10

volume of cylinders, cones & spheres, categorygrades68, volume, cone, cones, sphere, spheres, cylinder, cylinders, cylander, cylanders Grades 6-8 Volume of Cylinders, Cones & Spheres

comparing 3-digit numbers, categoryk2, compare, comparing, comparison, place value, place values, 3-digit, 3 digits, three digit, three digits, greater than, less than, inequalities, inequality Grades K-2 Comparing 3-Digit Numbers

intro to angles, categorygrades35, angle, angles, degrees, right, acute, obtuse Grades 3-5 Intro to Angles

multiply & divide with negative numbers, categorygrades68, negative, negative numbers, integer, integers, multiply, multiplying, multiplication, divide, division, dividing Grades 6-8 Multiply & Divide with Negative Numbers

money: combinations of bills & coins, categoryk2, money, coin, coins, bill, bills, dollar, dollars, penny, nickel, dime, quarter, combine, combination, pennys, pennies, nickels, dimes, quarters, cent, cents Grades K-2 Money: Combinations of Bills & Coins

equivalent fractions, categorygrades35, fraction, fractions, denominator, numerator, denominators, numerators, equivalent Grades 3-5 Equivalent Fractions

area of polygons (using decomposition), categorygrades68, area, decompose, decomposing, decomposition, polygon, composite Grades 6-8 Area of Polygons (Using Decomposition)

composing & decomposing numbers (11-19), categoryk2, compose, composing, decompose, decomposing, decomposting, put together, break apart, separate, split Grades K-2 Composing & Decomposing Numbers (11-19)

intro to multiplication, categorygrades35, multiply, multiplication, multiplying, multiplied, factor, factors, product, products Grades 3-5 Intro to Multiplication

scientific notation, categorygrades68, scientific notation, scientific notations Grades 6-8 Scientific Notation

partition shapes into equal shares, categoryk2, shape, shapes, split, cut, partition, partitions, partitioning, partitioned, half, halves, halfs, quarter, quarters, fourth, fourths, equal part, equal parts, third, thirds Grades K-2 Partition Shapes Into Equal Shares

addition & subtraction within 1,000, categorygrades35, add, addition, adding, subtract, subtraction, subtracting, sum, addened, total Grades 3-5 Addition & Subtraction Within 1,000

probability: compound events, categorygrades68, probability, probability, event, events, compound Grades 6-8 Probability: Compound Events

convert units of measurement, categorygrades35, convert, conversion, unit, units, measurement, measurements, lbs, pound, pounds, oz, ounce, ounces, meter, meters, cm, centimeter, centimeters, inch, inches, feet, foot, foots, feets Grades 3-5 Convert Units of Measurement

solve algebraic equations (1-step), categorygrades68, algebraic, algebraic equation, algebraic equations, algabraic, algabraic equation, algabraic equations, algebra, algabra Grades 6-8 Solve Algebraic Equations (1-Step)

add & subtract within 100, categoryk2, add, addition, adding, subtract, subtraction, subtracting, sum, addened, total Grades K-2 Add & Subtract Within 100

add & subtract fractions (unlike denominators), categorygrades35, add, addition, adding, subtract, subtraction, subtracting, fraction, fractions, common denominator, common denominators, like denominators, numerator, denominator, different denominator, different denominators, unlike denominator, unlike denominators Grades 3-5 Add & Subtract Fractions (Unlike Denominators)

intro to data: pictographs & bar graphs, categoryk2, bargraph, bargraphs, bar graph, bar graphs, picture graph, picture graphs, picto graph, picto graphs, pictograph, pictographs, pictografs, pictograf Grades K-2 Intro to Data: Pictographs & Bar Graphs

introduction to order of operations, categorygrades35, pemdas, gems, grouping, groupings, parenthesis, parentheses, brackets, braces, order, order of operations, ordering, operations order, operations Grades 3-5 Introduction to Order of Operations

transformations: reflections & translations, categorygrades68, transformation, reflection, translation, transformations, reflections, translations, reflect, reflecting, translate, translating Grades 6-8 Transformations: Reflections & Translations

comparing 2-digit numbers, categoryk2, compare, comparing, comparison, place value, place values, 2-digit, 2 digits, two digit, two digits, greater than, less than, inequalities, inequality Grades K-2 Comparing 2-Digit Numbers

lines of symmetry, categorygrades35, symetry, symmetry, line, lines, symetrical, symmetrical, mirror, miror Grades 3-5 Lines of Symmetry

histograms & box plots, categorygrades68, histogram, histograms, box plot, box plots, histograph, histographs, whisker, whiskers, boxplot, boxplots, bucket, frequency Grades 6-8 Histograms & Box Plots

intro to 3d shapes, categoryk2, 3d, 3 d, 3-d, shape, shapes, cube, cubes, prism, prisms, sphere, spheres, rectangular Grades K-2 Intro to 3D Shapes

division using an area model, categorygrades35, division, divide, dividing, divisions, split, divison, dividend, divisor, quotiet, partial quotient, partial quotients, big 7, big seven, area model, box model, area, box Grades 3-5 Division Using an Area Model

probability: single events, categorygrades68, probability, event, events, change, changes, stats, statistics, statistical, probable, chance, changes Grades 6-8 Probability: Single Events

intro to finding area, categorygrades35, area, areas, space, 2d, 2-dimensional, 2 dimensional, square, square unit, square units Grades 3-5 Intro to Finding Area

skip counting (2s, 5s, 10s & 100s), categoryk2, skip count, skip counting, skip, count, counting, 2s, 5s, 10s, 100s Grades K-2 Skip Counting (2s, 5s, 10s & 100s)

numbers in expanded & word form (1,000 & beyond), categorygrades35, expand, expanded form, expanded forms, word form, words, writing, write Grades 3-5 Numbers in Expanded & Word Form (1,000 & Beyond)

find solutions to algebraic inequalities, categorygrades68, inequalities, inequality, algebra, algabraic, algebraic, , algabra Grades 6-8 Find Solutions to Algebraic Inequalities

comparing quantities up to 10, categoryk2, compare, comparing, comparison, greater than, less than, more than, match, matching Grades K-2 Comparing Quantities up to 10

intro to division, categorygrades35, division, divide, dividing, divisions, split, divison, dividend, divisor, quotient, quotiet Grades 3-5 Intro to Division

integer exponents, categorygrades68, exponent, exponential, integer, integers Grades 6-8 Integer Exponents

solve problems with decimals (using models), categorygrades35, decimal, decimals Grades 3-5 Solve Problems with Decimals (Using Models)

mean, median & mode, categorygrades68, mean, median, mode, average, distribution, graph, graphing, data, stats, staticistic, statistics Grades 6-8 Mean, Median & Mode

intro to measurements: weight & length, categoryk2, measurement, measure, measurements, measuring, weight, weights, mass, masses, length, long, short, heavy, light Grades K-2 Intro to Measurements: Weight & Length

rounding (nearest 10 and 100), categorygrades35, estimate, estimation, round, rounding, approximate, approximation, nearest Grades 3-5 Rounding (Nearest 10 and 100)

square roots & cube roots, categorygrades68, square root, square roots, cube root, cube roots Grades 6-8 Square Roots & Cube Roots

read & write numbers to 100, categoryk2, read, reading, writing, writing, draw, drawing, 100, 120 Grades K-2 Read & Write Numbers to 100

introduction to perimeter, categorygrades35, perimeter, peremeter, peremiter, perimater, length, lengths, distance, measure, measurement Grades 3-5 Introduction to Perimeter

add & subtract with negative numbers, categorygrades68, negative, negative numbers, integer, integers, add, adding, addition, subtract, subtracting, subtraction Grades 6-8 Add & Subtract with Negative Numbers

classify objects by attribute (color, size & shape), categoryk2, classify, clasify, classifying, classification, sort, sorting, group, grouping, attribute, attributes, atribute, atribues, shape, shapes, color, colors, size, sizes Grades K-2 Classify Objects by Attribute (Color, Size & Shape)

add & subtract fractions (like denominators), categorygrades35, add, addition, adding, subtract, subtraction, subtracting, fraction, fractions, common denominator, common denominators, like denominators, numerator, denominator Grades 3-5 Add & Subtract Fractions (Like Denominators)

proportional relationships, categorygrades68, proportional, relationships, proportion, relationship Grades 6-8 Proportional Relationships

intro to regrouping (when adding & subtracting), categoryk2, regroup, regrouping, carry, carrying Grades K-2 Intro to Regrouping (When Adding & Subtracting)

generate number patterns (sequences that follow a given rule), categorygrades35, pattern, patterns, sequence, sequences Grades 3-5 Generate Number Patterns (Sequences That Follow a Given Rule)

solve problems with ratios and proportions, categorygrades68, none Grades 6-8 Solve Problems with Ratios and Proportions

add & subtract within 20, categoryk2, add, addition, adding, subtract, subtraction, subtracting, sum, addend, total Grades K-2 Add & Subtract Within 20

multiplication using the standard algorithm, categorygrades35, multiply, multiplication, multiplying, multiplied, factor, factors, product, products, standard algorithm, standard algorithms, standard, traditional, old-school, old school Grades 3-5 Multiplication Using The Standard Algorithm

use all 4 quadrants of the coordinate plane, categorygrades68, coordinate, co-ordinate, cordinate, coordinates, co-ordinates, cordinates, plane, grid, grids, planes, quadrant, quadrants Grades 6-8 Use All 4 Quadrants of the Coordinate Plane

place value: ones, tens & hundreds, categoryk2, place value, place values, tens, ones, hundreds Grades K-2 Place Value: Ones, Tens & Hundreds

calculate volume (l x w x h), categorygrades35, volume, volumes, lxwlh, l x w x h, length times width Grades 3-5 Calculate Volume (l x w x h)

intro to equality (find a missing number), categoryk2, equal sign, equality, missing number, equal, unknown number, add, addition, adding, subtract, subtraction, subtracting, sum, addend, total Grades K-2 Intro to Equality (Find a Missing Number)

scaled picture graphs & bar graphs, categorygrades35, bar graph, bar graphs, picture graph, picture graphs, picto graph, picto graphs, scaled, scaling Grades 3-5 Scaled Picture Graphs & Bar Graphs

solve algebraic equations (2-step), categorygrades68, algebraic, algebraic equation, algebraic equations, algabraic, algabraic equation, algabraic equations, algebra, algabra Grades 6-8 Solve Algebraic Equations (2-Step)

intro to 2d shapes, categoryk2, shape, shapes, flat, 2d, 2-d, 2 dimensional, two dimensional, 2 dimentional, two dimentional, square, squares, rectangle, rectangles, triangle, triangles, circle, circles Grades K-2 Intro to 2D Shapes

rounding (nearest 1,000 & beyond), categorygrades35, estimate, estimation, round, rounding, approximate, approximation, nearest Grades 3-5 Rounding (Nearest 1,000 & Beyond)

irrational numbers, categorygrades68, irrational, never ends, terminating, pi, pie Grades 6-8 Irrational Numbers

composing & decomposing numbers (1-10), categoryk2, compose, composing, decompose, decomposing, decomposting, put together, break apart, separate, split Grades K-2 Composing & Decomposing Numbers (1-10)

multiplying up to 4 digits (area model), categorygrades35, area model, area, box, multiply, multiplication, multiplying, multiplied, factor, factors, product, products Grades 3-5 Multiplying Up To 4 Digits (Area Model)

intro to subtraction, categoryk2, subtract, subtraction, subtracting, take away, taking away, difference Grades K-2 Intro to Subtraction

solve 2-step problems (all 4 operations), categorygrades35, two step, 2 step, 2-step, multi step, multistep, two part, 2 part, 2-part, two part Grades 3-5 Solve 2-Step Problems (All 4 Operations)

solve systems of equations, categorygrades68, system of equations, systems of equations, system, systems, algebra, algabra, algabraic, algebraic Grades 6-8 Solve Systems of Equations

strategies to add & subtract within 20 (make a 10 & doubles facts), categoryk2, add, addition, adding, subtract, subtraction, subtracting, sum, addend, total, strategy, strategies, make 10, make ten, make a ten, make a 10, making 10, making a 10, making a ten Grades K-2 Strategies to Add & Subtract within 20 (Make a 10 & Doubles Facts)

introduction to decimals (tenths & hundredths), categorygrades35, decimal, decimals, tenth, tenths, hundredth, hundredths, 0.1, 0.01 Grades 3-5 Introduction to Decimals (Tenths & Hundredths)

angle relationships in triangles and transversals, categorygrades68, transverse, transversal, angle, angles, degrees, angle sum, angle sums, angles sum, angles sums Grades 6-8 Angle Relationships in Triangles and Transversals

identify & draw shapes by attributes, categoryk2, draw, dawing, attribute, attributes, atribute, atribues, shape, shapes, circle, triangle, square, hexagon, rectangle, circles, triangles, squares, hexagons, rectangles Grades K-2 Identify & Draw Shapes By Attributes

intro to fractions using the number line, categorygrades35, number line, number lines, fraction, fractions, denominator, numerator, denominators, numerators Grades 3-5 Intro to Fractions Using the Number Line

determine the number of solutions for linear equations, categorygrades68, linear equation, linear equations, algebra, algabra, algabraic, algebraic, determine number, determine the number, number of solutions, infinite solutions, no solution Grades 6-8 Determine The Number of Solutions for Linear Equations

numbers in expanded & word form (3-digit numbers), categoryk2, expand, expanded form, expanded forms, word form, words, writing, write Grades K-2 Numbers in Expanded & Word Form (3-Digit Numbers)

tell time (nearest minute), categorygrades35, time, minute, hour, hours, minutes, o'clock, clock, clocks Grades 3-5 Tell Time (Nearest Minute)

graphing linear equations: slope & y-intercept (y= mx + b), categorygrades68, graph, graphing, proportional, proportion, slope, slopes, sloping, mx + b, y = mx + b, y=mx + b, y=mx+b Grades 6-8 Graphing Linear Equations: Slope & y-intercept (y= mx + b)

add & subtract using the standard algorithm, categorygrades35, add, addition, adding, subtract, subtraction, subtracting, sum, addened, standard algorithm, standard algorithms, standard, traditional, old-school, old school Grades 3-5 Add & Subtract Using the Standard Algorithm

greatest common factor & least common multiple, categorygrades68, gcf, lcm, greatest common factor, least common multiple, greatest common factors, least common multiples, greatest factor, common multiple Grades 6-8 Greatest Common Factor & Least Common Multiple

create new shapes from existing ones, categoryk2, shape, shapes, compose, composing, create new shapes, make new shapes, new shapes, more shapes Grades K-2 Create New Shapes From Existing Ones

intro to quadrilaterals and their attributes, categorygrades35, shape, shapes, quadrilaterals, quadrilateral, quadralaterals, quadralateral, rectangle, rectangles, square, squares, parallelogram, paralellogram, parallelograms, paralellograms, rhombus, 4 sides Grades 3-5 Intro to Quadrilaterals and their Attributes

dividing fractions by fractions, categorygrades68, fraction, fractions, denominator, numerator, denominators, numerators, division, divide, dividing, divisions, split, divison, dividend, divisor, quotient, quotiet Grades 6-8 Dividing Fractions by Fractions

intro to counting in groups (arrays), categoryk2, array, arrays, group, groups, grouping, count is groups, counting in groups, row, rows Grades K-2 Intro to Counting in Groups (Arrays)

interpreting fractions as division, categorygrades35, division, divide, dividing, divisions, split, divison, dividend, divisor, quotient, quotiet,
fraction, fractions, denominator, numerator, denominators, numerators Grades 3-5 Interpreting Fractions as Division

multiplication comparisons, categorygrades35, compare, comparison, comparisons, comparing, multiplication, multiplicative, multiplicitive Grades 3-5 Multiplication Comparisons

tell time (nearest half hour), categoryk2, time, hour, hours, minute, minutes, clock, clocks Grades K-2 Tell Time (Nearest Half Hour)

classify shapes in a hierarchy (quadrilaterals & triangles), categorygrades35, classify, clasify, classification, classifications, sort, organize, hierarchy, heirarchy, hiarchy, hiearchy, shape, shapes, quadrilaterals, quadrilateral, quadralaterals, quadralateral, rectangle, rectangles, square, squares, parallelogram, paralellogram, parallelograms, paralellograms, rhombus, 4 sides, triangle, triangles, polygon, polygons Grades 3-5 Classify Shapes in a Hierarchy (Quadrilaterals & Triangles)

how many triangles can you make? (given conditions), categorygrades68, triangle, triangles Grades 6-8 How Many Triangles Can You Make? (Given Conditions)

place value: ones & tens, categoryk2, place value, place values, tens, ones Grades K-2 Place Value: Ones & Tens

measure mass & volume (metric system), categorygrades35, mass, volume, measure, metric, gram, grams, liter, milliliter, weight, volumetric Grades 3-5 Measure Mass & Volume (Metric System)

scatter plots (displaying bivariate data), categorygrades68, bivariate, scatter plot, scatter plots, graph, graphs, graphing Grades 6-8 Scatter Plots (Displaying Bivariate Data)

add more than 2 numbers, categoryk2, add, addition, adding, subtract, subtraction, subtracting, sum, addened, total, 3 numbers, three numbers, 4 numbers, four numbers Grades K-2 Add More Than 2 Numbers

intro to remainders in a division problem, categorygrades35, none Grades 3-5 Intro to Remainders in a Division Problem

intro to ratios, categorygrades68, ratio, ratios, part of whole, part to part Grades 6-8 Intro to Ratios

intro to data: line plots, categoryk2, line plot, line plots, line graph, line graphs, line chart, line charts, number line, number lines Grades K-2 Intro to Data: Line Plots

compare non-equivalent fractions, categorygrades35, fraction, fractions, denominator, numerator, denominators, numerators Grades 3-5 Compare Non-Equivalent Fractions

long division (standard algorithm for division), categorygrades68, long division, division, divide, dividing, divisions, split, divison, dividend, divisor, quotient, quotiet, classic, old school, traditional, standard, algorithm Grades 6-8 Long Division (Standard Algorithm for Division)

measure & add length (intro to the ruler), categoryk2, ruler, rulers, inch, inches, cm, centimeters, centimeter, centi meter, length, distance, lengths, distances Grades K-2 Measure & Add Length (Intro to the Ruler)

find factor pairs within 100, categorygrades35, factor, factoring, factor pair, factor pairs Grades 3-5 Find Factor Pairs within 100

intro to functions, categorygrades68, function, functions, f of x, f(x) Grades 6-8 Intro to Functions

line plots with fractional measurements, categorygrades35, line plot, line plots, line graph, line graphs, line chart, line charts, number line, number lines Grades 3-5 Line Plots with Fractional Measurements

measure elapsed time, categorygrades35, time, elapsed, elapse, stopwatch, stop watch, timer, timing, clock Grades 3-5 Measure Elapsed Time

transformations: rotations & dilations, categorygrades68, transformation, rotation, dilation, transformations, rotations, dilations, rotate, dilate, transform, transforming, rotating, dilating Grades 6-8 Transformations: Rotations & Dilations

multiplication properties (commutative, associative & distributive), categorygrades35, property, properties, comutative, comutitive, commutative, commutative, associative, asociative, distributive, distribution, distribute Grades 3-5 Multiplication Properties (Commutative, Associative & Distributive)

identify number patterns (in arithmetic and the multiplication table), categorygrades35, pattern, patterns, sequence, sequences, multiplication table Grades 3-5 Identify Number Patterns (In Arithmetic and the Multiplication Table)

intro to negative numbers, categorygrades68, negative, negative numbers, integer, integers, number line, number lines,comparing, comparison, inequality, inequalities, greater than, less than Grades 6-8 Intro to Negative Numbers

multiplying fractions by fractions, categorygrades35, multiply, multiplication, multiplying, multiplied, fraction, fractions, numerator, denominator, numerators, denominators Grades 3-5 Multiplying Fractions by Fractions

decimals to the thousandths, categorygrades35, decimal, decimals, thousandth, thousandths, estimate, estimation, round, rounding, approximate, approximation, nearest Grades 3-5 Decimals to the Thousandths

area & circumference of circles, categorygrades68, circle, circles, circumference, radius, diameter, diameters, pie, pi, 3,1, 3.14, 3.141, 3,1415, radius, radial, area Grades 6-8 Area & Circumference of Circles

division using partial quotients (the big 7 model), categorygrades35, division, divide, dividing, divisions, split, divison, dividend, divisor, quotiet, partial quotient, partial quotients, big 7, big seven Grades 3-5 Division Using Partial Quotients (The Big 7 Model)

division with unit fractions & whole numbers, categorygrades35, fraction, fractions, denominator, numerator, denominators, numerators, division, divide, dividing, divisions, split, divison, dividend, divisor, quotient, quotiet Grades 3-5 Division with Unit Fractions & Whole Numbers

surface area (using formulas), categorygrades68, surface area, area Grades 6-8 Surface Area (Using Formulas)

four seasons and day length, categoryk2, season, seasons, day, day length, daylight, seasonal, fall, autumn, autum, winter, sping, spring, summer, hibernate, hibernation Grades K-2 Four Seasons and Day Length

chemical vs. physical changes, categorygrades35, chemical change, physical change, chemical, physical, chemical reaction, reactions, chemical reactions, chemistry, states of matter, mixture, mixtures, changes, change, elephant toothpaste, elephant, toothpaste, foam, magnatism Grades 3-5 Chemical vs. Physical Changes

bacteria & viruses, categorygrades68, bacteria, virus, viruses, covid, covid19, covid-19, microbe, microbes, microorganisms, microorganisms, micro-organisms, micro organisms, microorganism, micro-organisms, micro organism, flu, sick, infection, vaccine, vaccination, microscope Grades 6-8 Bacteria & Viruses

patterns in the sky, categoryk2, sun, star, stars, moon, pattern, patterns, sky, rise, set, predict, prediction, predicted Grades K-2 Patterns in the Sky

variation of traits, categorygrades35, traits, trait, variation, adaptation, adaptations, parent, offspring, reproduction, natural selection, heredity, hereditary, inherited Grades 3-5 Variation of Traits

multicellular organisms, categorygrades68, cell, cells, tissue, tissues, organ, organs, body system, body systems, multicellular, multi cellular, multi-cellullar, organization, structure, muscles, muscular, nervous, sense, senses, receptor, receptors, stomach, lungs, brain, nerve, nerves, kidney, brain, intestine, intestines, stomach, digestive, digest, respiratory, renal, excretory Grades 6-8 Multicellular Organisms

introduction to sound, categoryk2, sounds, sound, hear, hearing, ear, vibrate, vibration, speaker, tune, music Grades K-2 Introduction to Sound

balanced & unbalanced forces, categorygrades35, force, forces, strength, direction, balanced, unbalanced, motion, hovercraft, gravity Grades 3-5 Balanced & Unbalanced Forces

atoms & molecules, categorygrades68, atom, atoms, molecules, molecule, compound, chemical, reaction, chemical reaction, chemicals, atomic, proton, neutron, electron, protons, neutrons, electrons Grades 6-8 Atoms & Molecules

what is engineering?, categoryk2, engineering, engineer, engineered, enginer, design, design process, inventor, invention, inventions Grades K-2 What is Engineering?

lines, line segments, & rays, categorygrades35, line, lines, segment, segments, ray, rays, point, points Grades 3-5 Lines, Line Segments, & Rays

understanding the basic coordinate plane, categorygrades35, coordinate, co-ordinate, cordinate, coordinates, co-ordinates, cordinates, plane, grid, grids, planes, quadrant, quadrants Grades 3-5 Understanding the Basic Coordinate Plane

area of triangles & quadrilaterals (using formulas), categorygrades68, area, triangle, trapezoid, parallelogram, rhombus, trapezoids, parallelograms, rhombuses Grades 6-8 Area of Triangles & Quadrilaterals (Using Formulas)

standard algorithm with decimals (all 4 operations), categorygrades68, decimal, decimals, traditional, classic, standard, algorithm, algorithms Grades 6-8 Standard Algorithm with Decimals (All 4 Operations)

whole number exponents, categorygrades68, exponent, exponents, gems, order of operation, order of operations, pemdas Grades 6-8 Whole Number Exponents

what is science? (k-2 version), categoryk2, investigate, clue, clues, science, what is science, what is science?, experiment, experimentation, science, scientist, engineer, engineering, evidence, practice, practices, method, scientific, control, controlled, astronomy, biology, chemistry, paleontology, evidence, claim, claims, variable, variables, inquiry, investigation, investigations, law, laws, theory, theories, hypothesis Grades K-2 What Is Science? (K-2 Version)

pythagorean theorem, categorygrades68, pythagorean theorem, pythagorean, theorem, therem, therum, pithagorean, triangle, traingles, a squared, a^2 Grades 6-8 Pythagorean Theorem

weathering & erosion, categorygrades35, weathering, erosion, erosions, deposition, wind, ice, freeze, freezing, deposited, rock, rocks, sediment, sedimentary, sediments, glacier, grand canyon, river, mountain, landform, land form, land, land forms, soil, topsoil, change, changes Grades 3-5 Weathering & Erosion

tectonic plates, categorygrades68, tectonics, tectonic, plates, plate, tectonic plates, earthquake, mountains, boundary, boundaries, convergent, divergent, transform, continental drift Grades 6-8 Tectonic Plates

the five senses, categoryk2, sense, senses, see, hear, touch, taste, smell, see, eye, eyes, ear, ears, mouth, tongue, tonge, nose, noses, skin, hands, seeing, hearing, touching, tasting, tasteing, smelling, seeing Grades K-2 The Five Senses

structure of living things, categorygrades35, structure, structures, function, functions, animal, animals, plant, plants, bone, skin, eyes, survival, endoskeleton, exoskeleton, skeleton, living, alive, life, academy, lizard, bob Grades 3-5 Structure of Living Things

solar & lunar eclipses, categorygrades68, eclipse, eclipses, solar eclipse, lunar eclipse, blood moon Grades 6-8 Solar & Lunar Eclipses

introduction to weather, categoryk2, weather, rain, raining, rainy, snow, snowy, snowing, storm, stormy, wind, winds, windy, sunny, sun, clouds, cloud, cloudy Grades K-2 Introduction to Weather

water cycle (3-5 version), categorygrades35, water, vapor, gas, rain, water cycle, precipitation, snow, hail, cloud, clouds, weather, dew distillation, condensation, condense, evaporate, evaporation, cycle, hydrological, hydrologic, hydro, watercycle Grades 3-5 Water Cycle (3-5 Version)

chemical reactions, categorygrades68, law of conservation, chemical, chemistry, react, reaction, reactions Grades 6-8 Chemical Reactions

simple machines, categoryk2, simple machine, simple machines, pulley, pulleys, wheel, axel, axle, lever, levers, screw, force, forces, ramp, incline plane, included plane, wedge, strength, direction, machine, machines, levers, tool, tools Grades K-2 Simple Machines

properties of matter, categorygrades35, matter, properties, chemicals, density, chemical, conductivity, conductive, magnetism, solubility, solube, property, sulfur hexafluoride, slime, mass, volume, explosion, explosions, mater Grades 3-5 Properties of Matter

natural selection, categorygrades68, natural selection, evolution, adapt, adapting, adaptation, darwin, finch, finches, evolve Grades 6-8 Natural Selection

oceans, lakes and rivers, categoryk2, ocean, oceans, water, waters, lake, lakes, river, rivers, pond, glacier, glaciers, groundwater Grades K-2 Oceans, Lakes and Rivers

earth’s orbit & rotation, categorygrades35, orbit, rotation, spin, earth, earth's, earths, sky, space, shadow, shadows, constellations, cunstollation, constellation, parallax, day, night, sun, star, stars, pattern, patterns, geocentric, heliocentric, leap, zone, sundial, pendulum, planet, planets Grades 3-5 Earth’s Orbit & Rotation

electricity & circuits, categorygrades68, electrical, electricity, electronic, electronics, circuit, circuits, closed circuit, open circuit, series, parallel, resistor, wire, capacitor, transistor, motor, led, potentiometer Grades 6-8 Electricity & Circuits

living vs. non-living things, categoryk2, living, non-living, nonliving, not living, not-living, alive, dead, live, life, rock, nutrients, breath, breathing, reproduce, reproduction Grades K-2 Living vs. Non-Living Things

fossils & extinction, categorygrades35, fossil, fossils, extinct, extinction, dinosaur, dinosaurs, tar, brea, ancient, prehistoric, cat, wolf, herbivore, carnivore, omnivore, carnivores, omnivores, herbivores, paleontologist, wolf, dig, digging, fosil, fosils Grades 3-5 Fossils & Extinction

electromagnetic spectrum, categorygrades68, electromagnetic spectrum, radio, light, visible, microwave, microwaves, micro wave, micro waves, ir, infrared, infra red, radiation, radiate, rainbow, light wave, waves, wave, uv, ultraviolet, glow, glowing, radioactive, gamma, x-ray, x-rays, x ray, x rays, xray, xrays, wavelength, wave length, amplitude, frequency, frequencies Grades 6-8 Electromagnetic Spectrum

heating and cooling, categoryk2, heating, cooling, heat, cool, hotter, colder, temperature, degree, degrees, reversible, not reversibe, non-reversible, nonreversible, fahrenheit, celsius, melting, melt, freeze, freezing Grades K-2 Heating and Cooling

energy transfer, categorygrades35, energy, energy transfer, transfers, electric, electricity, conversion, light, sound, heat, generator, generate, generating, battery, batteries, charge, charging, motion, solar, wind, thermal, hydropower Grades 3-5 Energy Transfer

plant & animal cells, categorygrades68, cell, cells, nucleus, vacuole, chloroplast, cell wall, cell membrane, chlorophyll, cellular, mitochondria, golgi, golgi apparatus, lysosome, microscope Grades 6-8 Plant & Animal Cells

inspired by nature (biomimicry), categoryk2, biomimicry, mimic, mimicry, design, invention, inspire, inspired, inspriation, inspirational, designs, solution, invention, inventions Grades K-2 Inspired by Nature (Biomimicry)

sun and other stars, categorygrades35, sun, star, space, earth, distance, size, bright, distance, light year, planisphere, telescope, sirius, rigel, betelgeuse, telescope, telescopes Grades 3-5 Sun and Other Stars

causes of seasons, categorygrades68, tilt, season, seasons, summer, fall, winter, spring, sunlight, sun light, 23.5, 23, orbit Grades 6-8 Causes of Seasons

introduction to light, categoryk2, light, lights, lite, lyt, liet, transparent, translucent, opaque, dark, darkness, see, eyes, eye, illuminate, illuminated, light source, candle, laser, lightbulb, light bulb, bright Grades K-2 Introduction to Light

brain processing of senses, categorygrades35, brain, nerves, nerve, nervous, sensory, sense, senses, receptor, signal, taste, touch, smell, see, hear, vision, touch, reaction time, engineer, engineering, engineers Grades 3-5 Brain Processing of Senses

symbiosis (interactions between organisms), categorygrades68, symbiosis, symbiotic, competition, relations, relationships, interact, interaction, commensalism, mutualism, parasite, parasitic, parasitism, predator, prey, predation Grades 6-8 Symbiosis (Interactions Between Organisms)

pollination and seed dispersal, categoryk2, pollen, pollens, pollin, polen, pollinator, pollinators, pollination, pollinating, pollenator, pollenators, pollenation, pollenating, seed, seeds, disperse, dispersal, dispersing, dispersor, plant, plants, bee, bugs, bug Grades K-2 Pollination and Seed Dispersal

adaptations and the environment, categorygrades35, animal, animals, plants, plant, adapt, adapting, adaptation, adaptations, predator, prey, camouflage, sloth, armadillo, echidna, life, environment, environments, finch, finches, beak, beaks, beakes, adaptions Grades 3-5 Adaptations and the Environment

electric & magnetic fields, categorygrades68, field, fields, electric, magnetic, magnet, magnets, magent, magents, electro magnet, electromagnet, electromagnets, attract, attractive, repel, repulsive Grades 6-8 Electric & Magnetic Fields

material properties and purposes, categoryk2, material, property, properties, purpose, purposes, color, hardness, texture, flexibility, strength, absorbency, absorbent Grades K-2 Material Properties and Purposes

collisions, categorygrades35, collision, collisions, energy, energy transfer, moving, motion, transfer, impact, crash, contact, rube goldberg, force Grades 3-5 Collisions

classification of living things, categorygrades68, classify, classification, taxonomy, shared trait, shared traits, domain, kingdom, phylum, class, order, family, genus, species, scientific name, armadillo, salamander, taxonomic, hierarchy Grades 6-8 Classification of Living Things

gravity pulls things down, categoryk2, gravity, gravitational, pull down, newton, apple Grades K-2 Gravity Pulls Things Down

magnets & static electricity, categorygrades35, magnet, magnets, magnetism, magnetic, static electricity, static, push, pull, electromagnet, electromagnets, attract, attraction, repel, repulsion, ferro fluid, electrical, van de graff Grades 3-5 Magnets & Static Electricity

gravitational forces between objects, categorygrades68, gravity, gravitation, gravitational Grades 6-8 Gravitational Forces Between Objects

pushes and pulls, categoryk2, pushes, push, pulls, pull, force, forces, strength, direction, motion, motions, move, movement Grades K-2 Pushes and Pulls

food webs, categorygrades35, food, web, chain, webs, chains, sun, decompose, decomposers, producer, producers, consumer, consumers, apex, bacteria, fungi, fungus, compost, energy, photosynthesis, foodweb, foodchain, foodwebs, foodchains Grades 3-5 Food Webs

synthetic materials, categorygrades68, synthetic, chemical reaction, chemical, chemistry, reaction, man made, cman-made, chemical, chemistry, nylon, biodiesel, nitiniol, foam, unnatural Grades 6-8 Synthetic Materials

introduction to traits, categoryk2, trait, traits, brother, sister, parent, offspring, offsprings, baby, babies, mom, dad, mother, father, daddy, mommy Grades K-2 Introduction to Traits

conservation of matter, categorygrades35, conservation, conserve, burn, reaction, reactions, chemistry, physical, matter, dry ice, vanish, disappear, dissolve, law Grades 3-5 Conservation of Matter

competition in ecosystems, categorygrades68, ecosystem, ecosystems, eco system, eco system, ecology, ecological, competition, population, sustain Grades 6-8 Competition in Ecosystems

plant growth conditions, categoryk2, plant, plants, grow, growth, soil, sand, clay, loam, soils, soil quality Grades K-2 Plant Growth Conditions

ecosystems, categorygrades35, ecosystem, ecosystems, habitat, habitats, ecology, eco, invasive, rainforest, living, non-living, terrarium, bacteria, environment, environments, terrariums, ecosytem, ecosytems Grades 3-5 Ecosystems

wave reflection, absorption & transmittance, categorygrades68, wave, waves, reflect, reflection, absorb, absorption, transmit, transmittance, sound, light, refract, refraction, wavelength, wave length, amplitude, frequency, frequencies Grades 6-8 Wave Reflection, Absorption & Transmittance

patterns of motion & friction, categorygrades35, motion, moving, friction, pattern, patterns, pendulum Grades 3-5 Patterns of Motion & Friction

comparative anatomy, categorygrades68, anatomy, anatomical, evolution, natural selection, bone, bones, embryo, embryological, arms, limbs, common ancestor, phylogeny, evolutionary phylogenetic Grades 6-8 Comparative Anatomy

animals help their babies survive, categoryk2, offspring, offsprings, baby, babies, animal, animals, skink, owl, aligator, alligator, croc, crocodile, kangaroo, pouch, survive, survival, chirp, moo, patterns in behavior, behavior, behavioral pattern, behavioral patterns Grades K-2 Animals Help Their Babies Survive

renewable vs. nonrenewable resources, categorygrades35, renew, renewable, non-renewable, nonrenewable, fossil fuel, fossil fuels, sunlight, wind, power, resources, energy, engine, coal, oil, natural gas, ethanol, algae, generator, natural resource, natural resources Grades 3-5 Renewable vs. Nonrenewable Resources

solids, liquids and gases, categoryk2, solid, solids, liquids, liquid, gases, gas, states of matter, phases, phases of matter, phase, state, matter, forms, mater Grades K-2 Solids, Liquids and Gases

engineering design process, categorygrades68, engineer, engineering, design, design process, engineering design process, build Grades 6-8 Engineering Design Process

plants need water and light, categoryk2, plant, plants, grow, growth, growth conditions Grades K-2 Plants Need Water And Light

human body systems, categorygrades35, human, body, organ, organs, circulatory, circulation, digestive, digestion, respiratory, respiration, nervous, systems, system, heart, blood, lungs, nutrient, nutrients, exercise, nutrition, health, skeletal, skeleton, muscles, muscle, skeleton, skeletons Grades 3-5 Human Body Systems

what is science? (6-8 version), categorygrades68, science, science and engineering practices, practices of science, sep, seps, ngss, next generation science, crosscutting, cross cutting, cross-cutting, dci, dcis Grades 6-8 What is Science? (6-8 Version)

biodiversity of life on earth, categoryk2, diversity, diverse, life, animals, biodiversity, bio-diversity, habitat, habitats, lemur, scorpion, frog, skunk, backyard Grades K-2 Biodiversity of Life on Earth

natural disasters, categorygrades35, earthquake, earth quake, earthquakes, tsunami, tsunamis, sunami, sunamis, volcano, volcanoes, volcanos, hazard, natural, disaster, disasters, magnet, crust, plates, tectonic Grades 3-5 Natural Disasters

intro to thermal energy, categorygrades68, thermal, thermal energy, heat, phase change, phase changes, heating Grades 6-8 Intro to Thermal Energy

sunlight warms the earth, categoryk2, sunlight, sun, sunlit, sun light, warming, warm, heating, heat, shine, shade Grades K-2 Sunlight Warms the Earth

extreme weather solutions, categorygrades35, weather, engineering, engineer, hurricane, hurricanes, tornado, tornados, tornadoes, lightning, thunder, roof, heat wave, solutions, pattern, patterns, disaster, storm, storms Grades 3-5 Extreme Weather Solutions

food webs: cycling of matter & flow of energy, categorygrades68, food web, food webs, food, matter cycle, cycle matter, cycling of matter, cycling of energy, energy flow, flow of energy, flow of matter, tropic Grades 6-8 Food Webs: Cycling of Matter & Flow of Energy

habitats, categoryk2, habitat, habitats, environment, environments, surrounding, surroundings Grades K-2 Habitats

how do we use food, categorygrades35, energy, food, transfer, transferred, foods, hunger, photosynthesis, digestion, digestive, hydroponic, hydroponics, eat, eating, sun Grades 3-5 How Do We Use Food

properties of elements, categorygrades68, element, elements, periodic table, properties of elements, elemental, periods, groups, mendeleev, atomic number, atomic mass, electron, electrons, proton, protons, neutron, neutrons, density, reactivity Grades 6-8 Properties of Elements

parts of a plant, categoryk2, plant, plants, flower, flowers, stem, stems, roots, root, leaves, leaf, external part, external parts, fruit, fruits, seed, seeds Grades K-2 Parts of a Plant

wave properties, categorygrades35, wave, waves, amplitude, wavelength, energy, sound, transverse, longitudinal, particle, particles, wavelength Grades 3-5 Wave Properties

water cycle (6-8 version), categorygrades68, water cycle, wattercycle, water cycles, hydrologic, hydrological, precipitation, evaporate, evaporation, condesate, condensation, water Grades 6-8 Water Cycle (6-8 Version)

communication over distances, categoryk2, communication, light, sound, distance, communicate, comunicate, comunication, telephone, phone, morse, moorse, code Grades K-2 Communication Over Distances

moon & its phases, categorygrades35, moon, phase, phases, tides, reflection, space, earth, moons, crater, craters, telescope, telescopes Grades 3-5 Moon & Its Phases

potential vs. kinetic energy, categorygrades68, energy, potential, kinetic, roller coaster Grades 6-8 Potential vs. Kinetic Energy

maps of landforms, categoryk2, map, maps, physical map, topographic, topographical, mapping, landform, landforms, land form, land forms, mountain, mountains, forest, forests, geography Grades K-2 Maps of Landforms

interactions of earth’s spheres, categorygrades35, earth, earths, earth's, sphere, spheres, geosphere, biosphere, atmosphere, biosphere, hydrosphere, recycle, recycling, rocks, rock, ice, clouds, weather, weathering, erosion, deposition, polution, pollution, green, sustainability, sustainable Grades 3-5 Interactions of Earth’s Spheres

reproduction of living things, categorygrades68, reproduction, reproduce, mating, sexual, asexual, mate, mating, inherit, inheritance, gene, genes, allele, alleles, dna, genetic, genetics, genetic material, heredity, hereditary, offspring Grades 6-8 Reproduction of Living Things

light reflection & vision, categorygrades35, light, lights, vision, see, seeing, reflect, reflection, eye, eyes, laser, light bulb, lens Grades 3-5 Light Reflection & Vision

genes & mutations, categorygrades68, gene, genes, dna, genetic, genetics, genetic material, heredity, hereditary, offspring, mutation, mutations, chromosome, chromosomes Grades 6-8 Genes & Mutations

classification of materials, categoryk2, sort, sorting, classify, classifying, classification, observable, properties, property, color, hardness, hard, texture, soft, softness, flexibility, grouping, absorbency Grades K-2 Classification of Materials

particle nature of matter, categorygrades35, matter, particles, particle model, particle, atoms, molecules, gas, nitrogen, vacuum, physical, chemistry, physics, atom, molecule, atomic Grades 3-5 Particle Nature of Matter

the solar system, categorygrades68, solar system, sun, mars, venus, jupiter, saturn, mercury, uranus, pluto, neptune, galaxy, star, stars, asteroid, asteroids, keiper, solar systems, telescope Grades 6-8 The Solar System

natural resources, categoryk2, natural resources, natural resource, recycle, recycling, reduce, reuse, sustainable, sustainability, landfill, conserve, wood, trees, land, air, pollute, pollution Grades K-2 Natural Resources

weather vs. climate, categorygrades35, weather, climate, atmosphere, pattern, patterns, rain, thermometer, anemometer, barometer, pressure, wind, temperature Grades 3-5 Weather vs. Climate

photosynthesis & respiration, categorygrades68, photosynthesis, respiration, cellular respiration, sugar Grades 6-8 Photosynthesis & Respiration

changing the shape of land, categoryk2, weathering, erosion, land, erosions, eroding, land form, landforms, shape of land, land shape, prevent, stop Grades K-2 Changing the Shape of Land

animal group behavior, categorygrades35, group, groups, behavior, behaviors, animal, animals, migration, predator, prey, ant, life Grades 3-5 Animal Group Behavior

rocks & minerals (including rock cycle), categorygrades68, rock, rocks, mineral, minerals, rock cycle, metamorphic, igneous, sedimentary, lava, magma Grades 6-8 Rocks & Minerals (Including Rock Cycle)

reducing our impact on earth, categoryk2, human impacts, impact, recycle, recycling, reduce, reuse, three rs, 3 rs, waste, dump, dumping, three r's, 3 r's, landfill, conserve, land, air, pollute, pollution Grades K-2 Reducing Our Impact on Earth

information transfer, categorygrades35, tech, technology, technologies, electric, electronic, electrical, communication, communicate, digital, cd, music, text, signal, signals, code, coding, program, programming, morse, pixel, pixels, radio, computer, transmit, microchip, pattern, patterns, computers, robots, robotics, computer, robot Grades 3-5 Information Transfer

rock layers (geologic time), categorygrades68, rock, rock layer, rock layers, geologic, geology, geologic time scale, time scale. strata, stratum Grades 6-8 Rock Layers (Geologic Time)

external animal parts, categoryk2, anatomy, animal parts, animal part, parts of an animal, tail, claws, skin, structure, structures, function, function, structure and function Grades K-2 External Animal Parts

earth’s landscapes, categorygrades35, rock, layers, layer, landscape, landscapes, ancient, landscape, earth, earths, earth's, fossil, fossils, time, geologic, geology, bone, sharktooth, shark tooth, paleontology, silt, sedimentary, grand canyon, erosion, landform, landforms, land form, land forms, environment, environments Grades 3-5 Earth’s Landscapes

heat: transfer of thermal energy, categorygrades68, heat, heating, heat transfer, burn, burning, fire, conduction, convection, radiation Grades 6-8 Heat: Transfer of Thermal Energy

living things change their environment, categoryk2, change the environment, environmental change, beaver, dam, beaver dam, squirrel, prairie dog, meerkat, owl, maccaw, macaw Grades K-2 Living Things Change Their Environment

animal & plant life cycles, categorygrades35, life cycles, life cycle, lifecycle, lifecycles, cycles of life, butterfly, frog, babies, mate, mating, reproducing, reproduction, grow, seed, seeds, egg, birth, born, growth, mate, plants, animals, life, flowers, fruit, pollination, pollen, larvae, germination, chrysalis, seedling, metamorphosis, butterflies Grades 3-5 Animal & Plant Life Cycles

biotechnology, categorygrades68, dna, d.n.a., deoxyribonucleic acid, deoxyribo nucleic acid, genetic, genetic material, genetics, bio technology, biotech, biotechnologies, clone, cloning, artificial selection, breed, breeding Grades 6-8 Biotechnology

timescale of earth’s events, categoryk2, erosion, time, timescale, time scale, time scales, earthquake, earth quake, earthquakes, volcano, volcanoes, fast, slow, quick, quickly, slowly, magnitude Grades K-2 Timescale of Earth’s Events

water quality & distribution, categorygrades35, water, quality, distribution, ocean, oceans, lake, river, steam, runoff, run off, algae, water shed, watershed, watersheds, sediment, filter, filtration, biologist, marine, glacier, glaciers Grades 3-5 Water Quality & Distribution

maintaining biodiversity, categorygrades68, biodiversity, tide pool, tidepool, diversity, biodiversity, keystone species, keystone, tropic, bioindicator, bioindicators, bioindication, bio indicator, keystones Grades 6-8 Maintaining Biodiversity

animals need food, categoryk2, food, eat, eating, nutrients, animal, animals, need, needs, requirement, require, porcupine, monitor, lizard, monkey, wolf, dog, monkeys, lizards Grades K-2 Animals Need Food

what is science? (3-5 version), categorygrades35, experiment, experimentation, science, scientist, engineer, engineering, evidence, practice, practices, method, scientific, control, controlled, astronomy, biology, chemistry, paleontology, evidence, claim, claims, variable, variables, inquiry, investigation, investigations, law, laws, theory, theories, hypothesis Grades 3-5 What Is Science? (3-5 Version)

predicting natural disasters, categorygrades68, natural disaster, disaster, disasters, tornado, hurricane, tsunami, earthquake, volcano, tornados, hurricanes, tsunamis, sunami, sunamis, earthquakes, volcanos, earth quake, earth quakes Grades 6-8 Predicting Natural Disasters

digital vs. analog signals, categorygrades68, digital, analog, electronics, electronic, binary, code, coding, record player, records, music, 1s and 0s Grades 6-8 Digital vs. Analog Signals

newton’s laws of motion, categorygrades68, newton, law of motion, laws of motion, newton's law, newton's laws, motion, force, forces, 1st law, 2nd law, third law Grades 6-8 Newton’s Laws of Motion

climate zones & ocean currents, categorygrades68, climate, climate zone, climate zones, ocean, ocean current, ocean currents, thermohaline, thermo haline, circulation, atmosphere, temperate, arctic, tropic, tropical, tropics, subtropical, subtropics, subtropic, conveyor belt, circulate Grades 6-8 Climate Zones & Ocean Currents

air masses & weather fronts, categorygrades68, air mass, air masses, weather, weather front, cold front, warm front, stationary front, occluded front, atmosphere