PUZZLES
Free, fun, and meaningful math for all
Every JRMF puzzle is hands-on, play-based, and standards-aligned.
We design our activities to have a low floor so that anyone can find a way to engage and a high ceiling so that everyone can find a meaningful challenge.
All of our puzzles come with free festival guides that help you use our activities at home, in the classroom, or during math festivals.
For All Ages
Logic
Apple Picking
After a long day of picking apples, can you eat the last, juiciest apple?
For All Ages
Shape
Changing Colors
Can you make two of each shape? But they can't share the same colors!
For All Ages
Logic
Chocolate Fix
Can you make the perfect chocolate box for your customers?
For All Ages
Logic
Domino Dissection
Can you tile the board using each domino exactly once?
For All Ages
Logic
Frogs and Toads
Can you help the frogs and toads get to the other side of the pond?
For All Ages
Shape
Hexaflexagons
Learn the mysteries of the simple yet surprising hexaflexagon, and take one home to show your friends!
For All Ages
Shape
Königsberg
Everything is made up of one, continuous line. Can you figure out what belongs in town?
For All Ages
Shape
Map Coloring
Can you color each map so that no two neighboring states are colored the same color?
For All Ages
Logic
Monster Town
Race your friends to find the patterns in these Halloween-themed SET cards!
For All Ages
Logic
Panning for Gold
Among all the counterfeits there is only one true gold bar. Can you find it?
For All Ages
Logic
Pool Testing
Learn how doctors help patients using pool testing through this engaging game.
For All Ages
Shape
Tippy Toads
How many toads can you help sunbathe by balancing them on a lilypad?
For All Ages
Logic
Tower of Hanoi
Can you solve these puzzles based on an ancient legend, golden disks, and the end of the world?