Chalkboard Challenge is a problem solving game.  It lasts 50 seconds.

Designed to help you:

  • Compare values
  • Make accurate estimations

How to play:

  1. An equation will appear on each card.
  2. Tap the card with the greater value.
  3. If they are equal, tap the equal button. [On computer, use arrow keys, left, right, and down for equal -- cards are left/right; on mobile, cards are top/bottom]
  4. Correctly answer 5 in a row to earn a 10 second bonus! [It looks like it just accumulates for every 5, not consecutive]

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Screen shot 2014-10-01 at 16.07.21