I finally got around to putting my positive and negative integer flashcards up on my TPT store. I use them with most of my students. We use them to learn about have and owe alongside the blocks, for war games, and many other integer block, card and dice games and activities. Below is a sample picture of them. Click here to go to the link where you can buy them. I hope you enjoy them as much as I do.
Positive Integer Cards
Negative Integer Cards