Illuminations: Combining Foods

In this lesson, students explore addition and comparison subtraction by modeling and recording related addition and subtraction facts for a given number.

Comparison subtraction is the focus of this lesson because later in the unit, the students will explore the idea of “how many more?” to complete a set. The students also investigate the commutative property and model fact families, including those in which one addend is zero and those in which the addends are alike.

 

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Addition & Subtraction
K-6, Educator

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Illuminations (National Council of Teachers of Mathematics)

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