These are flashcards to fit into 4x6 photo albums. Students can use dry erase markers to work through the problems, then erase easily. This set is for two separate books, or you could mix them up in the same book if you'd like.
I use the 4x6 photo albums from The Dollar Tree and they hold 48 photos. There are 48 two-digit addition (with and without regrouping) cards included in this product, along with 48 subtraction (with and without regrouping) cards, plus the covers for each photo book.
I love using these because they are a super easy center to pass out, clean up, and all of the cards stay together and don't get lost. I love how portable this activity is!
If you have any questions, please contact me at StuckeyinSecond@hotmail.com (Or leave me a question here on my store page!) Thank you!