Geometry (Khan Academy)

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Learn about triangles, circles, rectangles, and other shapes. (1) Basic shapes Cousin Fal’s shape collection Recognizing shapes Name shapes 1 Relative position Name shapes 2 Name shapes 3 (2) Properties of shapes Cousin Fal’s shape collection Recognizing shapes Compare shapes Name shapes 4 (3) Composing shapes Composing shapes Compose shapes (4) Fractions of shapes Halves […]

Measurement and data (Khan Academy)

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Learn how to measure length, tell time, count money, and make graphs. (1) Length and size Compare size Ordering by length Order by length Indirect measurement (2) Measuring length Measure lengths 1 Measuring lengths 2 Measure lengths 2 Measuring lengths with different units Measuring lengths with different units (3) Comparing and estimating length Comparing lengths […]

Addition and subtraction within 1000 (Khan Academy)

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Learn to add and subtract two- and three-digit numbers within 1000. (1) Adding 1s, 10s, and 100s Adding 10 or 100 Adding 1s, 10s, and 100s Add 10s and 100s (no regrouping) Adding 3-digit numbers (no regrouping) Add 2- and 3-digit numbers (no regrouping) (2) Subtracting 1s, 10s, and 100s Subtracting 1, 10, or 100 […]

Addition and subtraction within 100 (Khan Academy)

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Learn to add and subtract two-digit numbers within 100. (1) Adding 1s and 10s Adding 1 vs. adding 10 Add 1 or 10 Understanding place value when adding tens Understanding place value when adding ones Adding 1s and 10s guided practice Add 1s or 10s (no regrouping) (2) Subtracting 1s and 10s Subtracting 1 vs. […]

Addition and subtraction within 20 (Khan Academy)

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Learn to add and subtract numbers that are 20 or less. (1) Addition within 20 Adding 7 + 6 Adding 8 + 7 Add within 20 Adding 5 + 3 + 6 Add 3 numbers (2) Subtraction within 20 Subtracting 14 – 6 Subtract within 20 (3) Equal sign Equal sign Equal sign (4) Missing […]

Place value (tens and hundreds) (Khan Academy)

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Learn about tens and hundreds. Compare 2-digit and 3-digit numbers. (1) Teens Teens as sums with 10 Teen numbers: monkeys Teen numbers (2) Tens Intro to place value Place value example: 25 Place value example: 42 Groups of ten objects Tens and ones 2-digit place value challenge (3) Comparing 2-digit numbers Greater than and less […]

Addition and subtraction intro (Khan Academy)

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Learn the basics of adding and subtracting. (1) What is addition? What is subtraction? Intro to addition Add within 5 Intro to subtraction Subtract within 5 (2) Put together, take apart Add and subtract: pieces of fruit Add within 10 Subtract within 10 (3) Making small numbers Making 5 Making 5 Making small numbers in […]

Counting (Khan Academy)

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Learn how to count. Say how many objects you see. (1) Counting small numbers Counting with small numbers Count with small numbers Counting in order Count in order Find 1 more or 1 less than a number (2) Numbers 0 to 120 Missing numbers Number grid Missing numbers between 0 and 120 Numbers to 100 […]

Khan Academy

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Khan Academy is perhaps the best known free collection of online courses. The subjects span a great range of topics, including everything from math and science to art history. According to their about page: Our mission is to provide a free, world‑class education for anyone, anywhere. A full list of the subjects they offer is […]