Caribou in Covid: Contests are running online as usual. Check out the FAQ for further questions.
Next interactive game question for Grades K-6: Tangram
Shape up for the January contest by practicing this classic geometry puzzle.
Next interactive game question for Grades 7-12: GeomeTree
You'll be asked to make a construction using lines and angles.
Practice now if you're angling to solve this puzzle!
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!
Happy New Year and New Lunar Year!
Have a great year of the tiger!
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: Skyscrapers
Solve the positions of skyscrapers and you'll be building your spatial reasoning and logic in this fun brainteaser.
Today's Calcrostic Puzzle
a + aa = ab × × × × - cdb / e = cf = = = = = agf - geh = gh
Yesterday's Solution
2 × 131 = 262 + + - - / 131 - 129 = 2 = = = = = 133 - 2 = 131
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