(I learned it from Dan Finkle who provided a math games webinar on Christina Tondevold's Build Math Minds site. Please consider following her work if you're an elementary math teacher.)
- Grab a partner and a collection of counters. (I use cubes, but it really doesn't matter.)
- A player has to take 1 counter on his turn but can take 2 if he chooses.
- The player who takes the last counter wins.
Ways to change it up:
- Use more counters.
- Play 1-2-3 Nim. (The player can take 1, 2, or 3 counters on his turn.)
- Poison: The player who takes the last counter loses.
- Use a ten frame. The player who puts the final counter in the ten frame wins.
My kids have the stamina to play this game and its variations for a good while. Though simple to play, it's so engaging. It's easy and fun enough for kids to teach family members at home too.
Give Nim a shot, and don't be surprised if a little person beats you a time or two! (Not that I would know anything about that.)