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Question: a32 chapter 2fractions and problem solving 23 reasoning about equivalent...

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A-32 Chapter 2-Fractions and Problem Solving 2.3 Reasoning About Equivalent Fractions Class Activity 21 Explaining Equivalent Fractions CCSS CCSS SMP2, SMP7, 4.NF. 1. Use our definition of fraction and the math drawing below to give a detailed conceptual ex- planation for why of a ribbon is the same amount of ribbon as 2 x 4 3 x 4 of the ribbon. Discuss how to ute the structure of the math drawing to explain the process of multiplying stays the same? both the numerator and denominator of j by 4. During the process,what changes and what Use a carefully structured math drawing to help you explain why! care to explain why the two fractions are equal. 2. . Take special = 3. When you discuss the ideas of parts I and 2 with students, they may find it confusing that in the math draving, the fraction pieces are divided, but in the numerical work, we multiply Address this confusing point by discussing what happens to the size of the pieces and what happens to the mumber of pieces when we create equivalent fractions
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