# 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.

If you’re interested in helping us design new activities, join our blog where we post about a new activity idea each week.

For All Ages
Logic

Apple Picking

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

3rd - 12th Grade
Number

Chameleon Island

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

For All Ages
Logic

Chocolate Fix

Can you make the perfect chocolate box for your customers?

3rd - 12th Grade
Logic

Colored Loops

Create colorful loops so that you can always find your way back to the beginning of the path.

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?

3rd - 12th Grade
Shape

Gerrymandering

Can you split up each puzzle so that more than half of the groups are purple groups?

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?

3rd - 12th Grade
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?

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.

3rd - 12th Grade
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.

3rd - 12th Grade
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?

3rd - 12th Grade
Logic

Skyscrapers

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

3rd - 12th Grade
Shape

Smileys

Smiling is contagious! Can you turn every frown upside down?

3rd - 12th Grade
Logic

Sprigs

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

3rd - 12th Grade
Number

Stepping Stones

Can you find a way to place the next stepping stone?

For All Ages
Shape

Tippy Toads

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

3rd - 12th Grade
Logic

Toothpick Squares

Can you make the right number of squares out of toothpicks?

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?

3rd - 12th Grade
Logic

Toothpick Triangles

Can you make the right number of triangles out of toothpicks?