Caribou Contests: Math made fun, for everyone!

Caribou in Covid: Contests are running online as usual. Check out the FAQ for further questions.

Math Games, Practice Tests, and Challenges | Caribou Contests

2022-2023 Caribou Contest Dates

Click here to see the finalized dates for the 2023 Caribou Cup. Let the countdown begin!

The Online Shop is now in Turkish!

Our online shop now accepts credit card payments in Turkish Lira. Anyone can access our online shop in Turkish by selecting "Language" in the menu and picking Turkish.

Free Math Resources and Contest Participation for Ukrainian Children

Students from Ukraine can try Caribou content for free. Go to the Online Shop for details.

Practice for the interactive Calcrostic challenge

Flex your math muscles and sleuthing skills!
For more puzzles, pick up the Puzzle Book in our Online Shop!

Tired of waiting?

Check out our online math learning resources to keep you busy and prepared for the next contest!

Caribou during COVID?

Students can access all content, even the contests, from home or school.
Click to see common COVID-related questions.

Random Game: Lights

Who turned on the lights? You will, if you can find patterns and plan your moves strategically.

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Today's Calcrostic Puzzle

 ab +  ab = cde
  × ×   × ×   ×
  f /   e =   g
  = =   = =   =
hda - gaf = gaf

What is This? | How to Solve It?

Yesterday's Solution

180 / 2 = 90
  + / × ×  -
180 / 4 = 45
  = = = =  =
360 / 8 = 45