Looking for the old site? First Graders: Win $25 in this contest!
"Reeling and Writhing, of course, to begin with," the Mock Turtle replied; "and then the different branches of Arithmetic-- Ambition, Distraction, Uglification, and Derision."

-- Lewis Carroll, Alice in Wonderland

Get TurtleCards or the free, addition-only version TurtleCardsLite from the Apple App Store!

Want to see how it works? Check out this video with spoken instructions:
Or this video that silently completes 50 problems:

First Graders: If you can do 50 double-digit addition problems faster than in the above video which is 4:51, then upload your video to YouTube and email us at service@mathrus.com with the posting time and total exercise time in the subject line, and the link to your video in the message body.

The new record setter for the week will be awarded with a $25 Amazon gift certificate!!!

Questions? Comments? Email us at service@mathrus.com
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