There are 5 bingo boards. Each board is arranged differently. Mutualism, Commensalism, Parasitism, Predation, and None are on each bingo board in random order. Just add your images to show students & you've got a game of bingo!
I showed students different images that I had in my classroom and asked them to put an X on which relationship it was. You can just as easily add images from online and put together in a slideshow.