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 Logic

3-in-a-Row

Can you be the first player to get 3-in-a-row?

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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

Arithmagons

Which number should you place in the circle?

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3rd - 12th Grade Shape

Billiards Geometry

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

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Blue Dot Solitaire

Can you remove all the dots?

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For All Ages Logic

Bridges

Can you build a bridge that connects all of the islands?

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3rd - 12th Grade Number

Cat, Dog, and Mouse Magic

Can you guess the secret number?

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For All Ages Number

Catch Up

Can you make the longest line?

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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 Shape

Changing Colors

Can you make two of each shape? But they can't share the same colors!

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For All Ages Logic

Chocolate Fix

Can you make the perfect chocolate box for your customers?

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3rd - 12th Grade Logic

Chomp

Can you avoid taking the yucky chocolate piece?

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For All Ages Shape

Color Triangles

Create beautiful, colorful triangular patterns.

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3rd - 12th Grade Logic

Colored Loops

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

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3rd - 12th Grade Logic

Connect the Dots

Can you connect all of the dots?

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3rd - 12th Grade Logic

Corners

Can you cover all the squares without going outside the lines?

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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 Number

Dice Bingo

Can you make a winning bingo card?

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Digit Sums

Use every digit of your numbers to solve these unique and challenging number puzzles.

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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

Doodles

Can you trace each doodle without lifting your marker?

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For All Ages Logic

Dot Parties

Can you make parties of connected squares and dots?

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3rd - 12th Grade Number

Dueling Dice

Can you make a better die than your partner?

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3rd - 12th Grade Logic

Four Corners

Can you be the first player to make a square?

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3rd - 12th Grade Logic

Frogs and Toads

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

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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 Logic

Go the Distance

Can you follow each puzzle’s clues to place all of the pieces into the row?

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3rd - 12th Grade Number

Graceful Gourds

Can you gracefully label these pumpkin patches?

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For All Ages Shape

Hexaflexagons

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

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3rd - 12th Grade Logic

Honeycomb

Can you be the first player to finish building the honeycomb?

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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 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?

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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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3rd - 12th Grade Logic

Meeple Town

Can you find all the places where the Meeple can live?

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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

Mosaics

Can you make each mosaic?

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3rd - 12th Grade Logic

Not So Close

Can you be the last player to make a move?

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3rd - 12th Grade Logic

Palindrome Swap

Can you make palindromes in the fewest number of swaps?

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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 Shape

Pentominoes

Can you find a way to cover the shapes with pentominoes?

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3rd - 12th Grade Shape

Poly Puzzles

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

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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

Rubik’s Riddles

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

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3rd - 12th Grade Logic

Shape Mazes

Can you jump your way from start to finish?

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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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3rd - 12th Grade Logic

Sprigs

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

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For All Ages Logic

Star Battle

Can you place the stars on the grid?

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3rd - 12th Grade Number

Stepping Stones

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

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3rd - 12th Grade Shape

Tile with Style

Can you cover the entire square with pattern blocks?

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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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3rd - 12th Grade Logic

Toothpick Triangles

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

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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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3rd - 12th Grade Logic

Yin-Yang

Can you fill each grid with red and yellow tokens?

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