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NEW K-8 Math Lessons Now Available
Inspiring Science & Math Lessons for K-8. Try it free. K-8. Try it free. Key Stage 1 & 2. F-6. Try it free. Get instant access to hours of fun, standards-based videos, reading material, quiz games, simple DIY activities & more.
NEW! Fun Math LessonsGrades K-8. Try it free. Grades K-8. Try it free. Key Stage 1 & 2. Grades F-6. Try it free. Get instant access to hours of fun, standards-based videos, reading material, quiz games, simple DIY activities & more.
NEW K-8 Math Lessons Now Available
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mental math within 100, categoryk2, mental math, head, brain, mind Grades K-2 Preview Only
Mental Math within 100 intro to angles, categorygrades35, angle, angles, degrees, right, acute, obtuse Grades 3-5 Preview Only
Intro to Angles intro to algebraic expressions, categorygrades68, algebraic, algebraic equation, algebraic equations, algabraic, algabraic equation, algabraic equations, expression, expressions, expresion, expresions, algebra, algabra Grades 6-8 Preview Only
Intro to Algebraic Expressions even & odd numbers, categoryk2, even, odd, evens, odds Grades K-2 Preview Only
Even & Odd Numbers powers of 10, categorygrades35, ten, 10, power, powers, multiplies, exponent, exponents, exponential Grades 3-5 Preview Only
Powers of 10 volume of cylinders, cones & spheres, categorygrades68, volume, cone, cones, sphere, spheres, cylinder, cylinders, cylander, cylanders Grades 6-8 Preview Only
Volume of Cylinders, Cones & Spheres intro to addition, categoryk2, add, addition, adding, sum, total Grades K-2 Preview Only
Intro to Addition multiplying fractions by whole numbers, categorygrades35, multiply, multiplication, multiplying, multiplied, fraction, fractions Grades 3-5 Preview Only
Multiplying Fractions by Whole Numbers multiply & divide with negative numbers, categorygrades68, negative, negative numbers, integer, integers, multiply, multiplying, multiplication, divide, division, dividing Grades 6-8 Preview Only
Multiply & Divide with Negative Numbers composing & decomposing numbers (11-19), categoryk2, compose, composing, decompose, decomposing, decomposting, put together, break apart, separate, split Grades K-2 Preview Only
Composing & Decomposing Numbers (11-19) equivalent fractions, categorygrades35, fraction, fractions, denominator, numerator, denominators, numerators, equivalent Grades 3-5 Preview Only
Equivalent Fractions 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 Preview Only
Money: Combinations of Bills & Coins intro to multiplication, categorygrades35, multiply, multiplication, multiplying, multiplied, factor, factors, product, products Grades 3-5 Preview Only
Intro to Multiplication scientific notation, categorygrades68, scientific notation, scientific notations Grades 6-8 Preview Only
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 Preview Only
Partition Shapes Into Equal Shares addition & subtraction within 1,000, categorygrades35, add, addition, adding, subtract, subtraction, subtracting, sum, addened, total Grades 3-5 Preview Only
Addition & Subtraction Within 1,000 probability: compound events, categorygrades68, probability, probability, event, events, compound Grades 6-8 Preview Only
Probability: Compound Events 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 Preview Only
Comparing 3-Digit Numbers 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 Preview Only
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 Preview Only
Solve Algebraic Equations (1-Step) add & subtract within 100, categoryk2, add, addition, adding, subtract, subtraction, subtracting, sum, addened, total Grades K-2 Preview Only
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 Preview Only
Add & Subtract Fractions (Unlike Denominators) unit rates, categorygrades68, unit rate, unit rates, rates, rate Grades 6-8 Preview Only
Unit Rates 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 Preview Only
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 Preview Only
Introduction to Order of Operations transformations: reflections & translations, categorygrades68, transformation, reflection, translation, transformations, reflections, translations, reflect, reflecting, translate, translating Grades 6-8 Preview Only
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 Preview Only
Comparing 2-Digit Numbers lines of symmetry, categorygrades35, symetry, symmetry, line, lines, symetrical, symmetrical, mirror, miror Grades 3-5 Preview Only
Lines of Symmetry histograms & box plots, categorygrades68, histogram, histograms, box plot, box plots, histograph, histographs, whisker, whiskers, boxplot, boxplots, bucket, frequency Grades 6-8 Preview Only
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 Preview Only
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 Preview Only
Division Using an Area Model probability: single events, categorygrades68, probability, event, events, change, changes, stats, statistics, statistical, probable, chance, changes Grades 6-8 Preview Only
Probability: Single Events intro to finding area, categorygrades35, area, areas, space, 2d, 2-dimensional, 2 dimensional, square, square unit, square units Grades 3-5 Preview Only
Intro to Finding Area percent change, categorygrades68, percent, percents, ratio, ratios Grades 6-8 Preview Only
Percent Change skip counting (2s, 5s, 10s & 100s), categoryk2, skip count, skip counting, skip, count, counting, 2s, 5s, 10s, 100s Grades K-2 Preview Only
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 Preview Only
Numbers in Expanded & Word Form (1,000 & Beyond) comparing quantities up to 10, categoryk2, compare, comparing, comparison, greater than, less than, more than, match, matching Grades K-2 Preview Only
Comparing Quantities up to 10 intro to division, categorygrades35, division, divide, dividing, divisions, split, divison, dividend, divisor, quotient, quotiet Grades 3-5 Preview Only
Intro to Division integer exponents, categorygrades68, exponent, exponential, integer, integers Grades 6-8 Preview Only
Integer Exponents mean, median & mode, categorygrades68, mean, median, mode, average, distribution, graph, graphing, data, stats, staticistic, statistics Grades 6-8 Preview Only
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 Preview Only
Intro to Measurements: Weight & Length rounding (nearest 10 and 100), categorygrades35, estimate, estimation, round, rounding, approximate, approximation, nearest Grades 3-5 Preview Only
Rounding (Nearest 10 and 100) square roots & cube roots, categorygrades68, square root, square roots, cube root, cube roots Grades 6-8 Preview Only
Square Roots & Cube Roots read & write numbers to 100, categoryk2, read, reading, writing, writing, draw, drawing, 100, 120 Grades K-2 Preview Only
Read & Write Numbers to 100 introduction to perimeter, categorygrades35, perimeter, peremeter, peremiter, perimater, length, lengths, distance, measure, measurement Grades 3-5 Preview Only
Introduction to Perimeter add & subtract with negative numbers, categorygrades68, negative, negative numbers, integer, integers, add, adding, addition, subtract, subtracting, subtraction Grades 6-8 Preview Only
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 Preview Only
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 Preview Only
Add & Subtract Fractions (Like Denominators) proportional relationships, categorygrades68, proportional, relationships, proportion, relationship Grades 6-8 Preview Only
Proportional Relationships add & subtract within 20, categoryk2, add, addition, adding, subtract, subtraction, subtracting, sum, addend, total Grades K-2 Preview Only
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 Preview Only
Multiplication Using The Standard Algorithm calculate volume (l x w x h), categorygrades35, volume, volumes, lxwlh, l x w x h, length times width Grades 3-5 Preview Only
Calculate Volume (l x w x h) 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 Preview Only
Use All 4 Quadrants of the Coordinate Plane 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 Preview Only
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 Preview Only
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 Preview Only
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 Preview Only
Intro to 2D Shapes rounding (nearest 1,000 & beyond), categorygrades35, estimate, estimation, round, rounding, approximate, approximation, nearest Grades 3-5 Preview Only
Rounding (Nearest 1,000 & Beyond) irrational numbers, categorygrades68, irrational, never ends, terminating, pi, pie Grades 6-8 Preview Only
Irrational Numbers composing & decomposing numbers (1-10), categoryk2, compose, composing, decompose, decomposing, decomposting, put together, break apart, separate, split Grades K-2 Preview Only
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 Preview Only
Multiplying Up To 4 Digits (Area Model) percents, categorygrades68, percent, percents, ratio, ratios, 100, one hundred Grades 6-8 Preview Only
Percents intro to subtraction, categoryk2, subtract, subtraction, subtracting, take away, taking away, difference Grades K-2 Preview Only
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 Preview Only
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 Preview Only
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 Preview Only
Strategies to Add & Subtract within 20 (Make a 10 & Doubles Facts) angle relationships in triangles and transversals, categorygrades68, transverse, transversal, angle, angles, degrees, angle sum, angle sums, angles sum, angles sums Grades 6-8 Preview Only
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 Preview Only
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 Preview Only
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 Preview Only
Determine The Number of Solutions for Linear Equations tell time (nearest minute), categorygrades35, time, minute, hour, hours, minutes, o'clock, clock, clocks Grades 3-5 Preview Only
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 Preview Only
Graphing Linear Equations: Slope & y-intercept (y= mx + b) write numbers up to 20, categoryk2, write, writing, draw, drawing Grades K-2 Preview Only
Write Numbers up to 20 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 Preview Only
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 Preview Only
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 Preview Only
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 Preview Only
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 Preview Only
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 Preview Only
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 Preview Only
Interpreting Fractions as Division pythagorean theorem, categorygrades68, pythagorean theorem, pythagorean, theorem, therem, therum, pithagorean, triangle, traingles, a squared, a^2 Grades 6-8 Preview Only
Pythagorean Theorem tell time (nearest half hour), categoryk2, time, hour, hours, minute, minutes, clock, clocks Grades K-2 Preview Only
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 Preview Only
Classify Shapes in a Hierarchy (Quadrilaterals & Triangles) place value: ones & tens, categoryk2, place value, place values, tens, ones Grades K-2 Preview Only
Place Value: Ones & Tens measure mass & volume (metric system), categorygrades35, mass, volume, measure, metric, gram, grams, liter, milliliter, weight, volumetric Grades 3-5 Preview Only
Measure Mass & Volume (Metric System) 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 Preview Only
Add More Than 2 Numbers intro to ratios, categorygrades68, ratio, ratios, part of whole, part to part Grades 6-8 Preview Only
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 Preview Only
Intro to Data: Line Plots compare non-equivalent fractions, categorygrades35, fraction, fractions, denominator, numerator, denominators, numerators Grades 3-5 Preview Only
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 Preview Only
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 Preview Only
Measure & Add Length (Intro to the Ruler) find factor pairs within 100, categorygrades35, factor, factoring, factor pair, factor pairs Grades 3-5 Preview Only
Find Factor Pairs within 100 intro to functions, categorygrades68, function, functions, f of x, f(x) Grades 6-8 Preview Only
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 Preview Only
Line Plots with Fractional Measurements measure elapsed time, categorygrades35, time, elapsed, elapse, stopwatch, stop watch, timer, timing, clock Grades 3-5 Preview Only
Measure Elapsed Time transformations: rotations & dilations, categorygrades68, transformation, rotation, dilation, transformations, rotations, dilations, rotate, dilate, transform, transforming, rotating, dilating Grades 6-8 Preview Only
Transformations: Rotations & Dilations multiplication properties (commutative, associative & distributive), categorygrades35, property, properties, comutative, comutitive, commutative, commutative, associative, asociative, distributive, distribution, distribute Grades 3-5 Preview Only
Multiplication Properties (Commutative, Associative & Distributive) 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 Preview Only
Intro to Negative Numbers multiplying fractions by fractions, categorygrades35, multiply, multiplication, multiplying, multiplied, fraction, fractions, numerator, denominator, numerators, denominators Grades 3-5 Preview Only
Multiplying Fractions by Fractions decimals to the thousandths, categorygrades35, decimal, decimals, thousandth, thousandths, estimate, estimation, round, rounding, approximate, approximation, nearest Grades 3-5 Preview Only
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 Preview Only
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 Preview Only
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 Preview Only
Division with Unit Fractions & Whole Numbers 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 Preview Only
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 Preview Only
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 Preview Only
Bacteria & Viruses patterns in the sky, categoryk2, sun, star, stars, moon, pattern, patterns, sky, rise, set, predict, prediction, predicted Grades K-2 Preview Only
Patterns in the Sky variation of traits, categorygrades35, traits, trait, variation, adaptation, adaptations, parent, offspring, reproduction, natural selection, heredity, hereditary, inherited Grades 3-5 Preview Only
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 Preview Only
Multicellular Organisms introduction to sound, categoryk2, sounds, sound, hear, hearing, ear, vibrate, vibration, speaker, tune, music Grades K-2 Preview Only
Introduction to Sound balanced & unbalanced forces, categorygrades35, force, forces, strength, direction, balanced, unbalanced, motion, hovercraft, gravity Grades 3-5 Preview Only
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 Preview Only
Atoms & Molecules what is engineering?, categoryk2, engineering, engineer, engineered, enginer, design, design process, inventor, invention, inventions Grades K-2 Preview Only
What is Engineering? lines, line segments, & rays, categorygrades35, line, lines, segment, segments, ray, rays, point, points Grades 3-5 Preview Only
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 Preview Only
Understanding the Basic Coordinate Plane multiplication comparisons, categorygrades35, compare, comparison, comparisons, comparing, multiplication, multiplicative, multiplicitive Grades 3-5 Preview Only
Multiplication Comparisons whole number exponents, categorygrades68, exponent, exponents, gems, order of operation, order of operations, pemdas Grades 6-8 Preview Only
Whole Number Exponents scale drawings (using scale factor), categorygrades68, scaling, scale, scale drawing, scale drawings, scale factor, scale factors, scale Grades 6-8 Preview Only
Scale Drawings (Using Scale Factor) 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 Preview Only
Weathering & Erosion tectonic plates, categorygrades68, tectonics, tectonic, plates, plate, tectonic plates, earthquake, mountains, boundary, boundaries, convergent, divergent, transform, continental drift Grades 6-8 Preview Only
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 Preview Only
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 Preview Only
Structure of Living Things solar & lunar eclipses, categorygrades68, eclipse, eclipses, solar eclipse, lunar eclipse, blood moon Grades 6-8 Preview Only
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 Preview Only
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 Preview Only
Water Cycle (3-5 Version) chemical reactions, categorygrades68, law of conservation, chemical, chemistry, react, reaction, reactions Grades 6-8 Preview Only
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 Preview Only
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 Preview Only
Properties of Matter natural selection, categorygrades68, natural selection, evolution, adapt, adapting, adaptation, darwin, finch, finches, evolve Grades 6-8 Preview Only
Natural Selection oceans, lakes and rivers, categoryk2, ocean, oceans, water, waters, lake, lakes, river, rivers, pond, glacier, glaciers, groundwater Grades K-2 Preview Only
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 Preview Only
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 Preview Only
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 Preview Only
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 Preview Only
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 Preview Only
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 Preview Only
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 Preview Only
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 Preview Only
Plant & Animal Cells inspired by nature (biomimicry), categoryk2, biomimicry, mimic, mimicry, design, invention, inspire, inspired, inspriation, inspirational, designs, solution, invention, inventions Grades K-2 Preview Only
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 Preview Only
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 Preview Only
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 Preview Only
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 Preview Only
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 Preview Only
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 Preview Only
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 Preview Only
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 Preview Only
Electric & Magnetic Fields material properties and purposes, categoryk2, material, property, properties, purpose, purposes, color, hardness, texture, flexibility, strength, absorbency, absorbent Grades K-2 Preview Only
Material Properties and Purposes collisions, categorygrades35, collision, collisions, energy, energy transfer, moving, motion, transfer, impact, crash, contact, rube goldberg, force Grades 3-5 Preview Only
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 Preview Only
Classification of Living Things gravity pulls things down, categoryk2, gravity, gravitational, pull down, newton, apple Grades K-2 Preview Only
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 Preview Only
Magnets & Static Electricity pushes and pulls, categoryk2, pushes, push, pulls, pull, force, forces, strength, direction, motion, motions, move, movement Grades K-2 Preview Only
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 Preview Only
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 Preview Only
Synthetic Materials introduction to traits, categoryk2, trait, traits, brother, sister, parent, offspring, offsprings, baby, babies, mom, dad, mother, father, daddy, mommy Grades K-2 Preview Only
Introduction to Traits conservation of matter, categorygrades35, conservation, conserve, burn, reaction, reactions, chemistry, physical, matter, dry ice, vanish, disappear, dissolve, law Grades 3-5 Preview Only
Conservation of Matter competition in ecosystems, categorygrades68, ecosystem, ecosystems, eco system, eco system, ecology, ecological, competition, population, sustain Grades 6-8 Preview Only
Competition in Ecosystems plant growth conditions, categoryk2, plant, plants, grow, growth, soil, sand, clay, loam, soils, soil quality Grades K-2 Preview Only
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 Preview Only
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 Preview Only
Wave Reflection, Absorption & Transmittance 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 Preview Only
What Is Science? (K-2 Version) patterns of motion & friction, categorygrades35, motion, moving, friction, pattern, patterns, pendulum Grades 3-5 Preview Only
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 Preview Only
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 Preview Only
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 Preview Only
Renewable vs. Nonrenewable Resources engineering design process, categorygrades68, engineer, engineering, design, design process, engineering design process, build Grades 6-8 Preview Only
Engineering Design Process 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 Preview Only
Solids, Liquids and Gases 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 Preview Only
What Is Science? (3-5 Version) natural resource distribution, categorygrades68, natural resource, natural resources, resource distribution, resources distribution, gold, coal, oil, natural gas, tectonic, continental, fossil fuel, fossil fuels Grades 6-8 Preview Only
Natural Resource Distribution biodiversity of life on earth, categoryk2, diversity, diverse, life, animals, biodiversity, bio-diversity, habitat, habitats, lemur, scorpion, frog, skunk, backyard Grades K-2 Preview Only
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 Preview Only
Natural Disasters 
