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?

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3rd - 12th Grade Number

Chameleon Island

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

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For All Ages Logic

Chocolate Fix

Can you make the perfect chocolate box for your customers?

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For All Ages Shape

Color Triangles

Create beautiful, colorful triangular patterns.

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3rd - 12th Grade Number

Countdown

Be the player to take the last token!

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For All Ages Logic

Crack the Code

Crack the secret code in as few guesses as you can!

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3rd - 12th Grade Logic

Cup Stacking

Can you find a way to stack every cup?

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For All Ages Logic

Domino Dissection

Can you tile the board using each domino exactly once?

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3rd - 12th Grade Shape

Gerrymandering

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

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3rd - 12th Grade Number

Graceful Gourds

Can you gracefully label these pumpkin patches?

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For All Ages Logic

Juice Jumble

Order these jumbled juices to make a beautiful rainbow.

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For All Ages Logic

Jumping Julia

Can you jump your way from start to finish?

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For All Ages Shape

Königsberg

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

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3rd - 12th Grade Number

Ladybugs

Help as many ladybugs as possible land on the leaves.

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3rd - 12th Grade Shape

Lots o’ Plots

Fill your entire garden with plots of carrots.

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3rd - 12th Grade Shape

Map Coloring

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

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For All Ages Logic

Monster Town

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

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For All Ages Logic

Panning for Gold

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

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3rd - 12th Grade Logic

Penguin Island

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

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For All Ages Logic

Pool Testing

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

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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.

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For All Ages Logic

River Crossings

Help your wolf, goat, and cabbage cross the river.

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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?

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3rd - 12th Grade Logic

Skyscrapers

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

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3rd - 12th Grade Shape

Smileys

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

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For All Ages Shape

Tippy Toads

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

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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?

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3rd - 12th Grade Shape

Wolves and Sheep

Keep your sheep safe from the wolves!

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