Lesson 2

Cover Up: Fact Families

Est. Class Sessions: 1

Daily Practice and Problems

Teacher Notes
X

Use DPP item E to practice addition facts in Group D and the using-doubles strategy. Ask students to explain how they used the using-doubles strategy and tools.

  1. 12 lambs
  2. 13 geese

E. Lots of Animals

Use connecting cubes, ten frames, and number lines to show how to solve each problem.

  1. One flock of sheep has six lambs. The second flock has twice as many as the first. How many lambs does the second flock have?


  2. Seven geese were flying overhead. Six more geese joined them. How many geese are flying together now?