In this episode Pam and Kim show how three popular models - 100 charts, base ten blocks, and algebra tiles - while powerful for developing reasoning, can limit students' development of more sophisticated thinking as tools for computation. 
Talking Points:

• CRA vs tools for thinking
• What are 100 charts, base 10 blocks and algebra tiles?
• 3 limitations for some manipulatives that prevent kids from doing Real Math 
• How each not-fav model have the 3 limitations for computing
• Mimicking or Mathematizing?