I also have a fun idea to teach subtraction regrouping (could be used for addition as well) that I plan to use when I tutor tomorrow afternoon. Use Cheerios for the ones and pretzels for the tens!
First the child makes the number.
If they need to borrow like in this problem let them eat a pretzel and trade it in for 10 Cheerios.
Check the one's place to see how many to eat. In this case it's 7 Cheerios. Yum!
Now check the ten's lace to see how many pretzels to eat. In this case it's 2 pretzels. Then you come up with the difference!
What kiddo wouldn't like that fun Common Core activity? I bet they would learn how to regroup with subtraction so much quicker this way because it's concrete! Give it a try and let me know how it works for you. The football cards will be available soon in my shop if you are interested!
Thanks for hoppin' by Hopkins' Hoppin' Happenings. Keep on smiling!