Lesson Plan:

Dimes, Dimes, Dimes

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March 23, 2017
by Lily Jones
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March 23, 2017
by Lily Jones

Learning Objectives

Students will be able to subtract multiples of 10.

Lesson

Introduction (5 minutes)

  • Ask students how much a dime is worth.
  • If you have a dime (real or plastic) show it to the class.

Explicit Instruction/Teacher Modeling (10 minutes)

  • Ask students how much money you would have if you had five dimes.
  • Draw five circles on the board. Write “10” in each circle. Show students how to count to 50 by tens.
  • Now ask students how much money you would have if you had 10 dimes.
  • Draw five more circles on the board and count to 100.

Guided Practice/Interactive Modeling (10 minutes)

  • Tell students that you want to buy something that costs 30 cents. Ask how many cents you would have left if you start with 100 cents and spend 30 cents.
  • Have students turn to a partner to share their answer.
  • Now write 100 - 30 = 70 on the board.
  • Tell students that you’d like to buy either an apple for 40 cents or a pear for 30 cents.
  • Ask, “Could I buy both the apple and the pear?”
  • Have students work with their partner to figure out whether or not this would be possible.
  • Write on the board 70 - 40 - 30 = 0.

Independent Working Time (15 minutes)

  • Pass out paper to each student. Tell them to draw a store where everything can be paid for in dimes. The prices of the items in the store should be 10 to 100 cents.
  • After students draw their stores, they should work with a partner to “purchase” items from the store.
  • Each student will start with 100 cents. As students purchase items, they should write number sentences showing how they subtracted the money they spent from 100.

Extend

Differentiation

Enrichment: Have students start with 200 cents when shopping in their partner’s store.

Support: Have students work with manipulatives (plastic coins) or real dimes.

Review

Assessment (5 minutes)

  • Assess students’ understanding by observing how they are subtracting by ten.
  • Are they able to mentally subtract? Pay attention to the number sentences they write.

Review and Closing (5 minutes)

  • Have students share the shopping they did at their partners’ stores and the number sentences they wrote.

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