Ralph Backé found mathigon--textbook-of-the-future:

• Builds student knowledge“Haven't yet used it with students.”
• Improves teaching efficiency and productivity“Still getting to know program”
• Saves school money“Have not used Mathigon at school yet.”
• Provides school data“See last”
• Teach-problem-solvings
• Improves creativity and critical thinking“See last”
• Improves creativity and critical thinking“See last”
• Improves parent engagement“See last”