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.

3rd - 12th Grade Shape

Billiards Geometry

Embrace your inner pool shark and try to make every shot.

Let's play

3rd - 12th Grade Number

Chameleon Island

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

Let's play

3rd - 12th Grade Logic

Chomp

Can you avoid taking the yucky chocolate piece?

Let's play

3rd - 12th Grade Logic

Colored Loops

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

Let's play

3rd - 12th Grade Number

Countdown

Be the player to take the last token!

Let's play

3rd - 12th Grade Logic

Cup Stacking

Can you find a way to stack every cup?

Let's play

3rd - 12th Grade Logic

Four Corners

Can you be the first player to make a square?

Let's play

3rd - 12th Grade Shape

Gerrymandering

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

Let's play

3rd - 12th Grade Number

Graceful Gourds

Can you gracefully label these pumpkin patches?

Let's play

3rd - 12th Grade Number

Ladybugs

Help as many ladybugs as possible land on the leaves.

Let's play

3rd - 12th Grade Shape

Lots o’ Plots

Fill your entire garden with plots of carrots.

Let's play

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?

Let's play

3rd - 12th Grade Logic

Palindrome Swap

Can you make palindromes in the fewest number of swaps?

Let's play

3rd - 12th Grade Logic

Penguin Island

Build a community on Penguin Island with more penguins than humans.

Let's play

3rd - 12th Grade Shape

Poly Puzzles

Can you build a polyhedron using the shapes in each puzzle?

Let's play

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.

Let's play

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?

Let's play

3rd - 12th Grade Logic

Rubik’s Riddles

Can you make the pattern in the puzzle by rotating the cube?

Let's play

3rd - 12th Grade Logic

Skyscrapers

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

Let's play

3rd - 12th Grade Shape

Smileys

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

Let's play

3rd - 12th Grade Logic

Sprigs

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

Let's play

3rd - 12th Grade Logic

Star Battle

Can you place the stars on the grid?

Let's play

3rd - 12th Grade Number

Stepping Stones

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

Let's play

3rd - 12th Grade Logic

Toothpick Squares

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

Let's play

3rd - 12th Grade Logic

Toothpick Triangles

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

Let's play