I made these after getting the idea off of Pinterest. Cole was struggling with reading large numbers. As we used them, I told Cole to think of the commas as last names. Then, we practiced yelling the numbers full name like they were in trouble. Ex: 5MILLION 432 THOUSAND 567 get in the house!
Lol you got to do what you got to do, ladies. Even if your neighbors think you're nuts.
Ps: Crayola markers smudge. Use a Sharpie.