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NEW K-8 Math Lessons Now Available
Videos y clases de ciencia y matemáticas para K-8.
Obtenga acceso a horas de divertidos videos basados en estándares, material de lectura, trivias, manualidades y más.
Nuevas clases y videos de
matemáticas para K-8.
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colisiones, categorygrades35, none Grados 3-5 
Colisiones hábitats, categoryk2, none Grados K-2 Hábitats intro to multiplication, categorygrades35, multiply, multiplication, multiplying, multiplied, factor, factors, product, products Grados 3-5 Intro to Multiplication equivalent fractions, categorygrades35, fraction, fractions, denominator, numerator, denominators, numerators, equivalent Grados 3-5 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 Grados K-2 Money: Combinations of Bills & Coins addition & subtraction within 1,000, categorygrades35, add, addition, adding, subtract, subtraction, subtracting, sum, addened, total Grados 3-5 Addition & Subtraction Within 1,000 intro to addition, categoryk2, add, addition, adding, sum, total Grados K-2 Intro to Addition percents, categorygrades68, percent, percents, ratio, ratios, 100, one hundred Grados 6-8 Percents lines of symmetry, categorygrades35, symetry, symmetry, line, lines, symetrical, symmetrical, mirror, miror Grados 3-5 Lines of Symmetry powers of 10, categorygrades35, ten, 10, power, powers, multiplies, exponent, exponents, exponential Grados 3-5 Powers of 10 dividing fractions by fractions, categorygrades68, fraction, fractions, denominator, numerator, denominators, numerators, division, divide, dividing, divisions, split, divison, dividend, divisor, quotient, quotiet Grados 6-8 Dividing Fractions by Fractions composing & decomposing numbers (11-19), categoryk2, compose, composing, decompose, decomposing, decomposting, put together, break apart, separate, split Grados K-2 Composing & Decomposing Numbers (11-19) measure mass & volume (metric system), categorygrades35, mass, volume, measure, metric, gram, grams, liter, milliliter, weight, volumetric Grados 3-5 Measure Mass & Volume (Metric System) intro to angles, categorygrades35, angle, angles, degrees, right, acute, obtuse Grados 3-5 Intro to Angles intro to fractions using the number line, categorygrades35, number line, number lines, fraction, fractions, denominator, numerator, denominators, numerators Grados 3-5 Intro to Fractions Using the Number Line intro to finding area, categorygrades35, area, areas, space, 2d, 2-dimensional, 2 dimensional, square, square unit, square units Grados 3-5 Intro to Finding Area 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 Grados K-2 Partition Shapes Into Equal Shares introduction to order of operations, categorygrades35, pemdas, gems, grouping, groupings, parenthesis, parentheses, brackets, braces, order, order of operations, ordering, operations order, operations Grados 3-5 Introduction to Order of Operations multiplying up to 4 digits (area model), categorygrades35, area model, area, box, multiply, multiplication, multiplying, multiplied, factor, factors, product, products Grados 3-5 Multiplying Up To 4 Digits (Area Model) intro to division, categorygrades35, division, divide, dividing, divisions, split, divison, dividend, divisor, quotient, quotiet Grados 3-5 Intro to Division numbers in expanded & word form (1,000 & beyond), categorygrades35, expand, expanded form, expanded forms, word form, words, writing, write Grados 3-5 Numbers in Expanded & Word Form (1,000 & Beyond) rounding (nearest 1,000 & beyond), categorygrades35, estimate, estimation, round, rounding, approximate, approximation, nearest Grados 3-5 Rounding (Nearest 1,000 & Beyond) compare non-equivalent fractions, categorygrades35, fraction, fractions, denominator, numerator, denominators, numerators Grados 3-5 Compare Non-Equivalent Fractions tell time (nearest minute), categorygrades35, time, minute, hour, minutes, o'clock, clock, clocks Grados 3-5 Tell Time (Nearest Minute) add & subtract fractions (like denominators), categorygrades35, add, addition, adding, subtract, subtraction, subtracting, fraction, fractions, common denominator, common denominators, like denominators, numerator, denominator Grados 3-5 Add & Subtract Fractions (Like Denominators) scaled picture graphs & bar graphs, categorygrades35, bar graph, bar graphs, picture graph, picture graphs, picto graph, picto graphs, scaled, scaling Grados 3-5 Scaled Picture Graphs & Bar Graphs rounding (nearest 10 and 100), categorygrades35, estimate, estimation, round, rounding, approximate, approximation, nearest Grados 3-5 Rounding (Nearest 10 and 100) multiplication using the standard algorithm, categorygrades35, multiply, multiplication, multiplying, multiplied, factor, factors, product, products, standard algorithm, standard algorithms, standard, traditional, old-school, old school Grados 3-5 Multiplication Using The Standard Algorithm introduction to perimeter, categorygrades35, perimeter, peremeter, peremiter, perimater, length, lengths, distance, measure, measurement Grados 3-5 Introduction to Perimeter 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 Grados 3-5 Add & Subtract Using the Standard Algorithm intro to quadrilaterals and their attributes, categorygrades35, shape, shapes, quadrilaterals, quadrilateral, quadralaterals, quadralateral, rectangle, rectangles, square, squares, parallelogram, paralellogram, parallelograms, paralellograms, rhombus, 4 sides Grados 3-5 Intro to Quadrilaterals and their Attributes measure elapsed time, categorygrades35, time, elapsed, elapse, stopwatch, stop watch, timer, timing, clock Grados 3-5 Measure Elapsed Time multiplication properties (commutative, associative & distributive), categorygrades35, property, properties, comutative, comutitive, commutative, commutative, associative, asociative, distributive, distribution, distribute Grados 3-5 Multiplication Properties (Commutative, Associative & Distributive) intro to 3d shapes, categoryk2, 3d, 3 d, 3-d, shape, shapes, cube, cubes, prism, prisms, sphere, spheres, rectangular Grados K-2 Intro to 3D Shapes lines, line segments, & rays, categorygrades35, line, lines, segment, segments, ray, rays, point, points Grados 3-5 Lines, Line Segments, & Rays multiplying fractions by fractions, categorygrades35, multiply, multiplication, multiplying, multiplied, fraction, fractions, numerator, denominator, numerators, denominators Grados 3-5 Multiplying Fractions by Fractions interpreting fractions as division, categorygrades35, division, divide, dividing, divisions, split, divison, dividend, divisor, quotient, quotiet,
fraction, fractions, denominator, numerator, denominators, numerators Grados 3-5 Interpreting Fractions as Division 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 Grados 3-5 Division Using Partial Quotients (The Big 7 Model) intro to subtraction, categoryk2, subtract, subtraction, subtracting, take away, taking away, difference Grados K-2 Intro to Subtraction read & write numbers to 100, categoryk2, read, reading, writing, writing, draw, drawing, 100, 120 Grados K-2 Read & Write Numbers to 100 identify & draw shapes by attributes, categoryk2, draw, dawing, attribute, attributes, atribute, atribues, shape, shapes, circle, triangle, square, hexagon, rectangle, circles, triangles, squares, hexagons, rectangles Grados K-2 Identify & Draw Shapes By Attributes multiplication comparisons, categorygrades35, compare, comparison, comparisons, comparing, multiplication, multiplicative, multiplicitive Grados 3-5 Multiplication Comparisons 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 Grados K-2 Intro to Equality (Find a Missing Number) line plots with fractional measurements, categorygrades35, line plot, line plots, line graph, line graphs, line chart, line charts, number line, number lines Grados 3-5 Line Plots with Fractional Measurements 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 Grados K-2 Classify Objects by Attribute (Color, Size & Shape) composing & decomposing numbers (1-10), categoryk2, compose, composing, decompose, decomposing, decomposting, put together, break apart, separate, split Grados K-2 Composing & Decomposing Numbers (1-10) create new shapes from existing ones, categoryk2, shape, shapes, compose, composing, create new shapes, make new shapes, new shapes, more shapes Grados K-2 Create New Shapes From Existing Ones 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 Grados K-2 Comparing 3-Digit Numbers calculate volume (l x w x h), categorygrades35, volume, volumes, lxwlh, l x w x h, length times width Grados 3-5 Calculate Volume (l x w x h) decimals to the thousandths, categorygrades35, decimal, decimals, thousandth, thousandths, estimate, estimation, round, rounding, approximate, approximation, nearest Grados 3-5 Decimals to the Thousandths division using an area model (up to 4-digit dividend), categorygrades35, division, divide, dividing, divisions, split, divison, dividend, divisor, quotiet, partial quotient, partial quotients, big 7, big seven, area model, box model, area, box Grados 3-5 Premieres Fall 2021
Division Using an Area Model (Up to 4-Digit Dividend) 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 Grados 3-5 Classify Shapes in a Hierarchy (Quadrilaterals & Triangles) 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 Grados 3-5 Add & Subtract Fractions (Unlike Denominators) understanding the basic coordinate plane, categorygrades35, coordinate, co-ordinate, cordinate, coordinates, co-ordinates, cordinates, plane, grid, grids, planes, quadrant, quadrants Grados 3-5 Understanding the Basic Coordinate Plane 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 Grados K-2 Intro to Data: Pictographs & Bar Graphs intro to data: line plots, categoryk2, line plot, line plots, line graph, line graphs, line chart, line charts, number line, number lines Grados K-2 Intro to Data: Line Plots add & subtract within 100, categoryk2, add, addition, adding, subtract, subtraction, subtracting, sum, addened, total Grados K-2 Add & Subtract Within 100 add more than 2 numbers, categoryk2, add, addition, adding, subtract, subtraction, subtracting, sum, addened, total, 3 numbers, three numbers, 4 numbers, four numbers Grados K-2 Add More Than 2 Numbers 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 Grados K-2 Comparing 2-Digit Numbers skip counting (2s, 5s, 10s & 100s), categoryk2, skip count, skip counting, skip, count, counting, 2s, 5s, 10s, 100s Grados K-2 Skip Counting (2s, 5s, 10s & 100s) division with unit fractions & whole numbers, categorygrades35, fraction, fractions, denominator, numerator, denominators, numerators, division, divide, dividing, divisions, split, divison, dividend, divisor, quotient, quotiet Grados 3-5 Division with Unit Fractions & Whole Numbers intro to measurements: weight & length, categoryk2, measurement, measure, measurements, measuring, weight, weights, mass, masses, length, long, short, heavy, light Grados K-2 Intro to Measurements: Weight & Length 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 Grados K-2 Intro to 2D Shapes measure & add length (intro to the ruler), categoryk2, ruler, rulers, inch, inches, cm, centimeters, centimeter, centi meter, length, distance, lengths, distances Grados K-2 Measure & Add Length (Intro to the Ruler) add & subtract within 20, categoryk2, add, addition, adding, subtract, subtraction, subtracting, sum, addend, total Grados K-2 Add & Subtract Within 20 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 Grados K-2 Strategies to Add & Subtract within 20 (Make a 10 & Doubles Facts) intro to counting in groups (arrays), categoryk2, array, arrays, group, groups, grouping, count is groups, counting in groups, row, rows Grados K-2 Intro to Counting in Groups (Arrays) comparing quantities up to 10, categoryk2, compare, comparing, comparison, greater than, less than, more than, match, matching Grados K-2 Comparing Quantities up to 10 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 Grados 3-5 Premieres Fall 2021
Solve 2-Step Problems (All 4 Operations) 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 Grados 3-5 Premieres Fall 2021
Convert Units of Measurement angle sums (triangles & transversals), categorygrades68, transverse, transversal, angle, angles, degrees, angle sum, angle sums, angles sum, angles sums Grados 6-8 Premieres Fall 2021
Angle Sums (Triangles & Transversals) pythagorean theorem, categorygrades68, pythagorean theorem, pythagorean, theorem, therem, therum, pithagorean, triangle, traingles, a squared, a^2 Grados 6-8 Premieres Fall 2021
Pythagorean Theorem transformations: reflections & translations, categorygrades68, transformation, reflection, translation, transformations, reflections, translations, reflect, reflecting, translate, translating Grados 6-8 Premieres Fall 2021
Transformations: Reflections & Translations probability: single events, categorygrades68, probability, probability, event, events, change, changes, stats, statistics, statistical, probable Grados 6-8 Premieres Fall 2021
Probability: Single Events histograms & box plots, categorygrades68, histogram, histograms, box plot, box plots, histograph, histographs, whisker, whiskers, boxplot, boxplots, bucket, frequency Grados 6-8 Premieres Fall 2021
Histograms & Box Plots intro to algebraic expressions, categorygrades68, algebraic, algebraic equation, algebraic equations, algabraic, algabraic equation, algabraic equations, expression, expressions, expresion, expresions, algebra, algabra Grados 6-8 Premieres Fall 2021
Intro to Algebraic Expressions transformations: rotations & dilations, categorygrades68, transformation, rotation, dilation, transformations, rotations, dilations, rotate, dilate, transform, transforming, rotating, dilating Grados 6-8 Premieres Fall 2021
Transformations: Rotations & Dilations use all 4 quadrants of the coordinate plane, categorygrades68, coordinate, co-ordinate, cordinate, coordinates, co-ordinates, cordinates, plane, grid, grids, planes, quadrant, quadrants Grados 6-8 Premieres Fall 2021
Use All 4 Quadrants of the Coordinate Plane volume of cylinders, cones & spheres, categorygrades68, volume, cone, cones, sphere, spheres, cylinder, cylinders, cylander, cylanders Grados 6-8 Premieres Fall 2021
Volume of Cylinders, Cones & Spheres mean, median & mode, categorygrades68, mean, median, mode, average, distribution, graph, graphing, data, stats, staticistic, statistics Grados 6-8 Premieres Fall 2021
Mean, Median & Mode 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 Grados 6-8 Premieres Fall 2021
Long Division (Standard Algorithm for Division) add & subtract with negative numbers, categorygrades68, negative, negative numbers, integer, integers, add, adding, addition, subtract, subtracting, subtraction Grados 6-8 Premieres Fall 2021
Add & Subtract with Negative Numbers graph proportional relationships and slope (y = mx + b), categorygrades68, graph, graphing, proportional, proportion, slope, slopes, sloping, mx + b, y = mx + b, y=mx + b, y=mx+b Grados 6-8 Premieres Fall 2021
Graph Proportional Relationships and Slope (y = mx + b) multiply & divide with negative numbers, categorygrades68, negative, negative numbers, integer, integers, multiply, multiplying, multiplication, divide, division, dividing Grados 6-8 Premieres Fall 2021
Multiply & Divide with Negative Numbers intro to negative numbers, categorygrades68, negative, negative numbers, integer, integers, number line, number lines,comparing, comparison, inequality, inequalities, greater than, less than Grados 6-8 Premieres Fall 2021
Intro to Negative Numbers area & circumference of circles, categorygrades68, circle, circles, circumference, radius, diameter, diameters, pie, pi, 3,1, 3.14, 3.141, 3,1415, radius, radial, area Grados 6-8 Premieres Fall 2021
Area & Circumference of Circles 
