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Math Fair Grade Level: Secondary

Colour Squares

Fill the square on the left with red, yellow, green, and blue chips so that no row, no column and neither of the two long…

Colour Iraq

One of the greatest unsolved problems in mathematics was whether any map needed more than 4 colours assuming that no regions which shared an edge…

Cold Potato

Katrina and her class are on a camping trip. Today, everyone gets a single potato for supper. It’s not much, but at least they should…

Circle Town

There are only two laws in Circle Town. Nobody can walk outside. This means that children must learn to drive from a very young age.No…

Can’t Stop

Game for 1-4 players. Rules:If one of the roles was a “1” the player scores zero points, otherwise the player scores the sum of his…

Barbanegra the Pirate

The crafty British pirate, Blackbeard (Spaniards called him Barbanegra), had a keen mind for mathematics. The following are excerpts from a diary found in a…

Backwards Population Explosion

How many of you are there?How many parents do you have?How many grandparents?How many great grandparents?How many great great grandparents?How many great great great grandparents?How…

An Amoeba’s Meaning of Life

In this puzzle, we explore the world of 2-dimensional geometry by constructing and analyzing shapes, such as pentagons, triangles, and squares. It introduces us to…