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Math Fair Category: Variables & Equations

Janus Upside Down

Janus is the Roman god of gates. He has a two-faced head because from each gate he needs to look in both directions. The first…

House of Gloom

In the valley in the heart of the dark wood lives a gloomy elf. His doorless home is painted totally black so dark that no…

Grasshopper Jump Fest

One of the sports that grasshoppers play when they are by themselves is the jump-fest. To play, a number of grasshoppers stand on a tire…

Frog Catchers

This is a game for two frog catchers. There are a bunch of frogs to catch and one special frog. You and a friend are…

Factorial Abacus

This problem is best for people who can express numbers in different bases. An abacus is a mechanical device for temporarily storing numbers during a…

Easter Island

After an epic voyage across the Pacific, the Polynesian catamarans arrived on Rapa Nui (Easter Island) approximately 1500 years ago. The Island was a paradise…

Double Dozen

Equipment: A deck of playing cards with Aces = 1 and the Jacks, Queens, Kings and Jokers left to one side. Number of Players: 2-6…

Die Hard

In the movie Die Hard, 4L of water must be weighed, and if incorrect, the fountain from which the water is drawn will explode, killing…

Connect the Dots

Circuit boards are made by imprinting a conducting metal like copper on a non-conducting material like fibreglass. If it were not for circuit boards, connections…