Dream Box – Addition on the Number Line Using Landmark Numbers. Using an open number line, students leverage landmark numbers such as tens and hundreds to solve addition problems. Lesson Dream Box – Subtraction on the Number Line Using Constant Difference. Using an open number line, students explore a compensation strategy as a vehicle to create …

# Tag: 3.NBT.A.2

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## Teaching Mental Math

Number Talks are Mental Math exercises, but students need to be taught how to think about mental math and how to incorporate math vocabulary into their thinking and speaking. The videos below are examples on how to coach students into using their mental math skills. Number Sense 3.NBT.A.2 Please follow and like us:

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