Lesson 2

Cover Up: Fact Families

Est. Class Sessions: 1

Summarizing the Lesson

After adequate game play, ask students to share number sentences and solution strategies. Try to elicit various strategies such as counting-up, counting-back, and using reasoning strategies. Select a pair of number sentences and challenge students to think of the remaining number sentences in the fact family. List each fact family on a display.

Next ask students to solve the following problem with a partner:

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  • Jacob showed Maya 14 beans. He covered some of the beans and there were still 7 beans showing. How many beans did Jacob cover up? Explain your strategy for solving the problem. Write all the number sentences that describe Jacob's problem.

When students are finished, ask them to describe their solution strategies and share their number sentences. Discuss why problems such as this have only two possible number sentences in the fact family. Then assign the Bean Cover Up pages in the Student Activity Book.

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Use the Bean Cover Up pages in the Student Activity Book to assess students’ abilities to represent addition and subtraction using number sentences [E3]; solve subtraction problems using counting strategies [E5]; and use mental math strategies and reasoning strategies (e.g., using doubles, using ten, making ten, reasoning from known facts) to solve addition and subtraction problems within 20 [E6].

To provide targeted practice with these Expectations, place copies of the Cover Up page in the Student Activity Book in a learning center with sets of 20 beans.

Adventure Book:
Student Activity Book: 111 112 113
Answers
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SAB_Mini
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SAB_Mini
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SAB_Mini
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Master: