Lesson 2

The Mouse-Proof Shelf

Est. Class Sessions: 1–2

Daily Practice and Problems

Teacher Notes
X

Use DPP item E to practice solving the addition facts in Group F and the related subtraction facts.

  1. Possible story: Liz has 8 marbles and her brother gave her 6 more. How many marbles does Liz have now?
  2. 14; Possible strategy: I know 8 + 8 = 16 so 8 + 6 is two less or 14.
  3. Possible story: Jason has 14 shells and his sister has 6. How many more shells does Jason have than his sister?
  4. 8; Possible strategy: I counted up on the number line from 6. 6 + 6 = 12, 13, 14. That is 6 + 2 = 8 counts. So 14 − 6 = 8.

E. Story Solving

  1. Tell your neighbor a story about 8 + 6.
  2. Show or tell how to solve 8 + 6.

  3. Tell your neighbor a story about 14 − 6.
  4. Show or tell how to solve 14 − 6.