This Week's Caribou Math Contest is Extended to Friday!

Due to the unavailability of the Internet provider today from 1:40 AM to 2:48 AM EDT, we will add another contest day on Friday for those who had not participated yet. Students whose test was cut off in the middle can also rewrite after having their test entry removed by their Coordinator.

We apologize for the inconvenience and thank you for your understanding.

It's Caribou Contest Day!

(because in some parts of the world, it is already Wednesday or Thursday)

You can start the contest once anytime within your school's Contest Time Window. By default, the window is Wednesday and Thursday, 7:30AM-3:30PM in your school's local time zone. Your school's Caribou Coordinators may modify the window, but the last possible time to start the contest is 6:30PM EST (Eastern Standard Time). Questions about Time?

You will need your Access Code to sign in. You can use a pencil and paper for rough work, but no calculators.

Preliminary results are announced around 8pm Thursday EST and finalized within a week. Sign in to see your results.

Best of luck & have fun with math!

Start the Contest