Caribou in Covid: Contests are running online as usual. Check out the FAQ for further questions.
Happy Easter, everybunny
Here's hopping you have a great start to your spring!
Welcome aboard : Caribou is teaming up with RICE in Vietnam
Click to go to the website of the Research Institute for Creative Education!
Next interactive game: Unknotting!
Click to go to the Unknotting game page to practice for the April contest.
Watch the Unknotting Demo Video
See the solution of an R3 Unknotting problem (may take a few seconds to load). English Audio + Subtitles available in other languages.
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: Calcrostic
A crossword-style cryptology game that challenges a student's number sense, logic, and computation skills. From grade 3 level to superhuman difficulty.
Calcrostic of the Day
ab + c = ad × - + + - c + ae = ab = = = = = fag / ab = c
Yesterday's Solution
6 × 27 = 162 + × / / - 12 × 9 = 108 = = = = = 18 × 3 = 54
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