**click on Youtube icon on the bottom corner of the video to get it to play. Sorry, I don't know how to fix it, lol!
Chapter 4- Bar Models
Lesson 1, Part Whole Bar Model
Chapter 10- Mental Math Strategies & Rounding
These videos will hopefully help you in understanding how your child is being taught how to solve mental math addition and subtraction problems. I sent home a "cheat sheet" too. If you still have questions, please email me.