Mathstakes

Mathstakes - or Math Mistakes - are an attempt to encourage students to find and correct mistakes.  Most are introduced with a visual prompt, but there is no other word prompt outside of the visual.  In addressing the visual, learners must first find, or construct, what they believe the problem.  They must then figure out what was done in the visual to solve the given problem.  The problem and solution are always provided in the visual.

After this, learners are charged with the task of determining whether the solution is appropriate.  If so, they must defend it; if not, they must explain - or teach - a better process.