I have! Who has? Zip through reinforcing the knowledge of sums and differences of basic addition and subtraction facts.
Twenty-one game cards include three different rounds of color-coded facts from 0-20 on each game card: Round A - Addition (green), Round B - Subtraction (black), Round C - Addition and Subtraction Mixed (red). Directions and cover sheet are included for this game to help guide students as they practice their facts quickly and accurately while working cooperatively with classmates to see how rapidly they can zip through a complete round!
Game preparation: Once sheets are downloaded, copy onto cardstock paper and cut apart the two cards per page to have a set of 21 game cards.
Challenge: Time the class to see how quickly they can "zip" through a round. Play again and see if they get a faster time. Do the math! How much time elapsed? What is the difference between the first and second timed rounds?