Lesson 3

Addition Strategies Seminar

Est. Class Sessions: 2

Daily Practice and Problems

Teacher Notes
X

Have connecting cubes and desk number lines readily available.

  1. 5 cubes; 2 +  5 = 7 or 7 − 2 =  5
  2. Grace has 6 more cubes; 2 +  6 = 8 or 8 − 2 =  6

H. Comparing Cubes

Solve and show a number sentence.

  1. Sam has a stack of 7 cubes. Linda has a stack of 2 cubes. How many cubes should be added to Linda's stack so it will be the same as Sam's stack?


    Number sentence _____________________________________________
  2. Grace has a stack of 8 cubes. John has a stack of 2 cubes. Who has more cubes? How many more?


    Number sentence _____________________________________________