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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
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colisiones, categorygrades35, none Grados 3-5 
Colisiones hábitats, categoryk2, none Grados K-2 Hábitats unit rates, categorygrades68, unit rate, unit rates, rates, rate Grados 6-8 Unit Rates scale drawings (using scale factor), categorygrades68, scaling, scale, scale drawing, scale drawings, scale factor, scale factors, scale Grados 6-8 Scale Drawings (Using Scale Factor) intro to algebraic expressions, categorygrades68, algebraic, algebraic equation, algebraic equations, algabraic, algabraic equation, algabraic equations, expression, expressions, expresion, expresions, algebra, algabra Grados 6-8 Intro to Algebraic Expressions powers of 10, categorygrades35, ten, 10, power, powers, multiplies, exponent, exponents, exponential Grados 3-5 Powers of 10 volume of cylinders, cones & spheres, categorygrades68, volume, cone, cones, sphere, spheres, cylinder, cylinders, cylander, cylanders Grados 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 Grados K-2 Comparing 3-Digit Numbers intro to angles, categorygrades35, angle, angles, degrees, right, acute, obtuse Grados 3-5 Intro to Angles multiply & divide with negative numbers, categorygrades68, negative, negative numbers, integer, integers, multiply, multiplying, multiplication, divide, division, dividing Grados 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 Grados K-2 Money: Combinations of Bills & Coins equivalent fractions, categorygrades35, fraction, fractions, denominator, numerator, denominators, numerators, equivalent Grados 3-5 Equivalent 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) intro to multiplication, categorygrades35, multiply, multiplication, multiplying, multiplied, factor, factors, product, products Grados 3-5 Intro to Multiplication scientific notation, categorygrades68, scientific notation, scientific notations Grados 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 Grados K-2 Partition Shapes Into Equal Shares 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 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 Convert Units of Measurement solve algebraic equations (1-step), categorygrades68, algebraic, algebraic equation, algebraic equations, algabraic, algabraic equation, algabraic equations, algebra, algabra Grados 6-8 Solve Algebraic Equations (1-Step) add & subtract within 100, categoryk2, add, addition, adding, subtract, subtraction, subtracting, sum, addened, total Grados 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 Grados 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 Grados 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 Grados 3-5 Introduction to Order of Operations transformations: reflections & translations, categorygrades68, transformation, reflection, translation, transformations, reflections, translations, reflect, reflecting, translate, translating Grados 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 Grados K-2 Comparing 2-Digit Numbers lines of symmetry, categorygrades35, symetry, symmetry, line, lines, symetrical, symmetrical, mirror, miror Grados 3-5 Lines of Symmetry histograms & box plots, categorygrades68, histogram, histograms, box plot, box plots, histograph, histographs, whisker, whiskers, boxplot, boxplots, bucket, frequency Grados 6-8 Histograms & Box Plots 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 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 Grados 3-5 Division Using an Area Model probability: single events, categorygrades68, probability, event, events, change, changes, stats, statistics, statistical, probable, chance, changes Grados 6-8 Probability: Single Events 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 percent change, categorygrades68, percent, percents, ratio, ratios Grados 6-8 Percent Change 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) 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) 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 intro to division, categorygrades35, division, divide, dividing, divisions, split, divison, dividend, divisor, quotient, quotiet Grados 3-5 Intro to Division integer exponents, categorygrades68, exponent, exponential, integer, integers Grados 6-8 Integer Exponents mean, median & mode, categorygrades68, mean, median, mode, average, distribution, graph, graphing, data, stats, staticistic, statistics Grados 6-8 Mean, Median & Mode 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 rounding (nearest 10 and 100), categorygrades35, estimate, estimation, round, rounding, approximate, approximation, nearest Grados 3-5 Rounding (Nearest 10 and 100) square roots & cube roots, categorygrades68, square root, square roots, cube root, cube roots Grados 6-8 Square Roots & Cube Roots read & write numbers to 100, categoryk2, read, reading, writing, writing, draw, drawing, 100, 120 Grados K-2 Read & Write Numbers to 100 introduction to perimeter, categorygrades35, perimeter, peremeter, peremiter, perimater, length, lengths, distance, measure, measurement Grados 3-5 Introduction to Perimeter add & subtract with negative numbers, categorygrades68, negative, negative numbers, integer, integers, add, adding, addition, subtract, subtracting, subtraction Grados 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 Grados 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 Grados 3-5 Add & Subtract Fractions (Like Denominators) proportional relationships, categorygrades68, proportional, relationships, proportion, relationship Grados 6-8 Proportional Relationships add & subtract within 20, categoryk2, add, addition, adding, subtract, subtraction, subtracting, sum, addend, total Grados 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 Grados 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 Grados 6-8 Use All 4 Quadrants of the Coordinate Plane 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) 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) 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 solve algebraic equations (2-step), categorygrades68, algebraic, algebraic equation, algebraic equations, algabraic, algabraic equation, algabraic equations, algebra, algabra Grados 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 Grados K-2 Intro to 2D Shapes rounding (nearest 1,000 & beyond), categorygrades35, estimate, estimation, round, rounding, approximate, approximation, nearest Grados 3-5 Rounding (Nearest 1,000 & Beyond) irrational numbers, categorygrades68, irrational, never ends, terminating, pi, pie Grados 6-8 Irrational Numbers 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) 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) percents, categorygrades68, percent, percents, ratio, ratios, 100, one hundred Grados 6-8 Percents intro to subtraction, categoryk2, subtract, subtraction, subtracting, take away, taking away, difference Grados 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 Grados 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 Grados 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 Grados K-2 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 Grados 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 Grados 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 Grados 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 Grados 6-8 Determine The Number of Solutions for Linear Equations tell time (nearest minute), categorygrades35, time, minute, hour, hours, minutes, o'clock, clock, clocks Grados 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 Grados 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 Grados 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 Grados 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 Grados 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 Grados 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 Grados 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 Grados 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 Grados 3-5 Interpreting Fractions as Division multiplication comparisons, categorygrades35, compare, comparison, comparisons, comparing, multiplication, multiplicative, multiplicitive Grados 3-5 Multiplication Comparisons 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) measure mass & volume (metric system), categorygrades35, mass, volume, measure, metric, gram, grams, liter, milliliter, weight, volumetric Grados 3-5 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 Grados K-2 Add More Than 2 Numbers intro to ratios, categorygrades68, ratio, ratios, part of whole, part to part Grados 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 Grados K-2 Intro to Data: Line Plots compare non-equivalent fractions, categorygrades35, fraction, fractions, denominator, numerator, denominators, numerators Grados 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 Grados 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 Grados K-2 Measure & Add Length (Intro to the Ruler) intro to functions, categorygrades68, function, functions, f of x, f(x) Grados 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 Grados 3-5 Line Plots with Fractional Measurements measure elapsed time, categorygrades35, time, elapsed, elapse, stopwatch, stop watch, timer, timing, clock Grados 3-5 Measure Elapsed Time transformations: rotations & dilations, categorygrades68, transformation, rotation, dilation, transformations, rotations, dilations, rotate, dilate, transform, transforming, rotating, dilating Grados 6-8 Transformations: Rotations & Dilations 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 negative numbers, categorygrades68, negative, negative numbers, integer, integers, number line, number lines,comparing, comparison, inequality, inequalities, greater than, less than Grados 6-8 Intro to Negative Numbers multiplying fractions by fractions, categorygrades35, multiply, multiplication, multiplying, multiplied, fraction, fractions, numerator, denominator, numerators, denominators Grados 3-5 Multiplying Fractions by Fractions decimals to the thousandths, categorygrades35, decimal, decimals, thousandth, thousandths, estimate, estimation, round, rounding, approximate, approximation, nearest Grados 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 Grados 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 Grados 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 Grados 3-5 Division with Unit Fractions & Whole Numbers lines, line segments, & rays, categorygrades35, line, lines, segment, segments, ray, rays, point, points Grados 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 Grados 3-5 Understanding the Basic Coordinate Plane whole number exponents, categorygrades68, exponent, exponents, gems, order of operation, order of operations, pemdas Grados 6-8 Whole Number Exponents pythagorean theorem, categorygrades68, pythagorean theorem, pythagorean, theorem, therem, therum, pithagorean, triangle, traingles, a squared, a^2 Grados 6-8 Pythagorean Theorem statistics: random samples & comparing data sets, categorygrades68, data, data set, data sets, random, samples, sample, sampling, randomization, sample size, population Grados 6-8 Statistics: Random Samples & Comparing Data Sets 
