Lesson 2

Strategies for Making Tens

Est. Class Sessions: 2

Daily Practice and Problems

Teacher Notes
X

TIMS Task

  1. 14
  2. 4
  3. 2
  4. 4
  5. 20
  6. 2
  1. Possible response: I split 3 into 1 and 2. I added the 1 to the 9 to get 10, so the 2 goes in the box.

Ongoing Assessment

Use DPP item H to assess students' abilities to recognize that the equal sign represents the relationship between two equal quantities [E4] and to solve addition problems using the making-tens strategy [E5].

H. Find the Missing Numbers

  1. = 9 + 5
  2. 8 + = 12
  3. 8 + 7 = 8 + + 5
  4. 10 + = 7 + 7
  5. 15 + 6 = + 1
  6. 9 + 3 = 10 +
  1. Show or tell how you solved F.