This is a collection of 8 different "matrix addition" puzzles which use funky symbols as clues to figure out the answers. They were designed for 2nd graders, but you could use them with advanced first graders, or just throw them at some third and fourth graders to see how they react. They're sort of algebraic puzzles that you can have a lot of fun with and who doesn't like fun?
What makes this really cool is that I also included a set of "blank" puzzles which your students can customize, share with one another or, better yet, send to me and I'll turn them into polished pieces which I'll email back to you in under 24 hours. How's that for an offer? So by these and get your students crackin'!