• In Unit 1, students explore the number 100 and extend their understanding of numbers greater than 100.
  
• In Unit 2, students build mental computation strategies as they play games with dice, spinners, and game boards.
  
• In Unit 3, students develop, use, and explain strategies in solving addition and subtraction problems that arise from data they collect about their names.

In these units, students extend their cooperative and group decision skills.