This game challenges students to plan ahead and think strategically.
Many parents remember struggling to learn math. We hope to provide a better experience for our children. And one of the best ways for children to enjoy learning is through hands-on play.
So what are you waiting for? Let’s play some math!
Sim
Math Concepts: geometry, strategy.
Players: only two.
Equipment: colored pencils or markers, paper.
How to Play
Draw a circle. Add 6 dots spaced out around the circumference.
Each player needs a different colored pencil or marker.
Take turns drawing straight lines across the circle to connect two of the dots. The first person to complete a triangle in their own color with all three corners on the circle loses the game.

Variations
Use the game as a journaling prompt. Here are some sample questions:
- What is your strategy for winning?
- Do you think this is a fair game, or does one player have an advantage?
- How would you count score, so you could compare your performance from one game to the next?
- How would you modify the game rules? Is your version easier or harder than the original game?
- Do you prefer logical strategy games or games of chance? Or do the best games have a bit of both? Explain.
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This game is an excerpt from 312 Things To Do with a Math Journal, available at my bookstore (Thank you for cutting out the middleman!) and through many online retailers. Read more about my playful math books here.
Special Offer: Would you like to access a growing archive of Math Monday games and other activity ideas as convenient printable pdf downloads, ready to print and play with your kids? Join me on Patreon or choose the paid subscription on Substack for mathy inspiration, tips, printable activities, and more.
“Math Game Monday: Sim” copyright © 2026 by Denise Gaskins.