Percent Increase and Decrease Quiz
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Reasoning About Numbers with Number Lines
The most important model for developing number sense is the number line. Open number lines develop reasoning rather than counting. Developing a deep sense of magnitude, proportional spacing, and relative location of numbers in early grades is critical to success in later grades. What will you hear when your students Math Out Loud?
2nd - 3rd
Mental Math, Numbers
CCSS
2.NBT.A.2
, 2.NBT.A.4
, 2.NBT.B.5
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