Strategy Videos 

1. Addition Place Value Model with Regrouping using discs (27+15)

https://youtu.be/0m58UdJotKA

2. Vertical or Stacked Addition Model with Regrouping (114+28)

https://youtu.be/uyIUyq1SICk

3. Subtraction Place Value Model with Regrouping using discs (61-27)

https://youtu.be/nW5tbut5HN0

4. Subtraction Place Value Model with Regrouping using Illustrations (75-38)

https://youtu.be/iLQQkDFvT7M

5. Vertical or Stacked Subtraction Model with Regrouping (141-27)

https://youtu.be/Go0ibBSuiUc 

Module 1

Module 2

Module 3

Module 4

Module 5

Module 6

Module 7

Module 8