Mass – Guess & Check

 Introduce the students to area watching video Discuss that we are going to make some shapes of different surface areas{...}

https://www.teacherspayteachers.com/Product/The-Product-Game-Created-by-NCTM-and-variations-of-Move-One-Games-6659193 Board Game found here.{...}

I can regroup numbers when I have 10 of a unit (for example, 10 ones makes 1 ten, and 10{...}