What is in That Pocket?

Est. Class Sessions: 3

Summarizing the Lesson

Partition Five. Display the Math Practices page from the Student Activity Book Reference section. Discuss Math Practices Expectation 2, Find a strategy, and the strategies used in this lesson to find and organize different partitions of ten. Assign the Five Pennies Table in the Student Activity Book to provide further experiences partitioning numbers into two parts and writing corresponding number sentences. Encourage students to use their Two Pockets Work Mat and five pennies. Remind them to use Math Practices Expectation 2, Find a strategy. Discuss students' work partitioning five into two parts.

Make connections between their work partitioning five with their work partitioning ten.

Did you use the same strategies to find different ways to partition the five pennies?

Play What Goes in the Pocket? Display copies of the Ten Frames and Number Sentences Master. Have students take turns placing a number of pennies in the top pocket only of the Two Pocket Work Mat page. They then fill in the first addend and 10 for the total in the number sentence. The rest of the class must decide how many pennies should go in the bottom pocket. Write the second addend in the number sentence after the response is given. This is an introduction to missing addend problems.

Partition Nine. Ask students to complete the Nine Pennies Table page in the Student Activity Book. Students find different ways to place nine pennies into two pockets. Remind students to find a strategy [MPE2] to arrange their solutions so that they can be sure they can find all or most of the combinations.

Use the Nine Pennies Table page with the Feedback Box to assess students' abilities to:

Connect representations of quantities using counters and symbols [E2].
Compose and decompose quantities using
counters [E3].
Represent addition situations with number
sentences [E6].
Organize information in a data table [E8].
MPE2. Find a strategy. I choose good tools and an efficient strategy for solving the problem.

The Pockets and Ten Frames pages in the Student Activity Book and the Two Pockets and Ten Pennies Table Master can be modified to explore any number of pennies. Some students may need to arrange the pennies and complete the ten frames before completing the table to visualize the patterns represented in the number sentences showing different partitions of a number [E3].

The Three Pockets Work Mat and the Three Pockets and Ten Pennies Table Masters can be used to provide targeted practice with partitioning numbers into three parts [E3].

Adventure Book: