According to the Common Core Standards, in Grade 1, instructional time should focus on four critical areas: (1) developing understanding of addition, subtraction, and strategies for addition and subtraction within 20; (2) developing understanding of whole number relationships and place value, including grouping in tens and ones; (3) developing understanding of linear measurement and measuring lengths as iterating length units; and (4) reasoning about attributes of, and composing and decomposing geometric shapes.
If you know a particular Common Core Domain that you'd like to practice, you can drill down to it here.
This is a listing of all our 1st Grade Online Math Videos. Newest videos are on top!
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Khan - Commutative and Associative Laws of Addition Example using both the commutative and associative laws of addition (3:23) |
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2-digits Plus Tens Students teach adding tens to 2-digit numbers |
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Khan - Adding Multi-digit Whole Numbers Adding larger number with tens and ones (1:32) |
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Khan - Basic Addition Basic addition and introduction to the number line (7:43) |
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Khan - Associative Law of Addition Review the associative law of addition with Sal (2:10) |
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Khan - Commutative Law of Addition Learn about the commutative law of addition (1:40) |
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Khan - Basic Subtraction Introduction to subtraction first reviewing addition (8:32) |
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Khan - Basic Subtraction 2 Second part in the subtraction series from Sal (12:32) |
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Khan - Basic Subtraction 3 Part three in the subtraction series from Sal (18:26) |
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