1 1.OA.B.3 Grade 1 · Operations and Algebraic Thinking

1.OA.B.3: Use properties of operations to add (3 + 8 = 8 + 3; 2 + 6 + 4 = 2 + 10)

Apply properties of operations to add. For example, when adding numbers order does not matter.Common Core State Standards for Mathematics, as adopted in the Massachusetts Curriculum Framework for Mathematics (2017), Grade 1.

Play the game: Every Way to Make 10Step 8 of the ColorMyMath curriculum · free, no sign-up →
Step 31 · Proving →Step 44 · Proving →Step 45 · Proving →Step 46 · Proving →Step 47 · Proving →Step 48 · Proving →

How ColorMyMath teaches it

Addition is a length — dots laid end to end on the number line. Taking away comes down the same line. Every fact is shown as a picture before it is ever asked for from memory.

Every page is free and open — nothing to install, no account, and it works on a phone or a classroom board. Every number has its own color: 1 red, 2 orange, 3 yellow, 4 green, 5 blue, 6 purple, 7 brown, 8 pink, 9 cyan, and a number is that many colored dots.

Where it sits in the curriculum

More Grade 1 standards in Operations and Algebraic Thinking

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ColorMyMath · getridoftheteacher.com · every number has its own color, and a number is that many colored dots. Matching a game to a standard is a judgement call; the official text is at doe.mass.edu.