Parentheses: How big of a change can they make!?
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Students will add sets of parentheses to expressions to see how large of a change they can create.
- First, I model the process and then give them a sample to try: 7 × 3 + 7 × 2
- I show my best answer (see below) and then present four more samples.
- I reveal my best answers, then ask students to think about what patterns or rules they spotted to help them place their parentheses. They write these out as 3 to 5 tips to create a guidebook.