# PUZZLES

Math puzzles for all ages and skill levels.

JRMF puzzles are unique compared to other math games you’ll find. We design problems with low-floors so everyone can get started by the simple act of trying something and with high-ceilings that lead to challenging mathematics.

Play them in person with friends, or virtually at home.

K and Up
Logic

Apple Picking

After a long day of picking apples, can you eat the last, juiciest apple?

4th and Up
Number

Chameleon Island

Help all the chameleons on the island change into the same color.

K and Up
Logic

Frogs and Toads

Can you help the frogs and toads get to the other side of the pond?

4th and Up
Shape

Gerrymandering

Learn how gerrymandering can be used to control elections by practicing gerrymandering yourself!

K and Up
Shape

Hexaflexagons

Learn the mysteries of the simple yet surprising hexaflexagon, and take one home to show your friends!

K and Up
Shape

Königsberg

Everything is made up of one, continuous line. Can you figure out what belongs in town?

4th and Up
Number

Magic Flowers

Can you arrange 5 numbers into a Magic Flower in which every group of three numbers in a line adds up to the same magic number?

K and Up
Shape

Map Coloring

Can you color each map so that no two neighboring states are colored the same color?

K and Up
Logic

Monster Town

Race your friends to find the patterns in these Halloween-themed SET cards!

K and Up
Logic

Panning for Gold

Among all the counterfeits there is only one, true gold bar. Can you find it?

K and Up
Logic

Pool Testing

Learn how doctors help patients using pool testing through this engaging game.

4th and Up
Number

Prime Cubes

Armed with only your understanding of prime numbers, play against your friends to find the best way to fill in our colorful cube.

4th and Up
Logic

Rook’s Move

Race your friends to get the rook to the end of the chessboard. Can you find a way to win every time?

4th and Up
Logic

Skyscrapers

Help the city planner build up the city with new skyscrapers.

4th and Up
Logic

Sprigs

Take turns drawing curves to connect dots. Can you be the one to draw the last curve?

K and Up
Shape

Tippy Toads

How many toads can you help sunbathe by balancing them on a lilypad?

K and Up
Logic

Tower of Hanoi

Can you solve these puzzles based on an ancient legend, golden disks, and the end of the world?