Lesson Plan

Illustrative Mathematics: 3.oa the Stamp Collection

Curated by ACT

This task uses language, half of the stamps, that students associate with multiplication by the fraction 1/2. Students will understand half of 120 to mean the number obtained by dividing 120 by 2. For students who are unfamiliar with this language the task provides a preparation for the later understanding that a fraction of a quantity is that fraction times the quantity. Aligns with CCSS.Math.Content.3.OA.D.8 Solve two-step word problems using the four operations

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CCSS: Designed
Common Core