Skip to main content
Sample Programs Online
Request a Print Sample
Contact a Rep
Sample Programs Online
Request a Print Sample
Contact a Rep
Sample Programs Online
Request a Print Sample
Contact a Rep
Sample Programs Online
Request a Print Sample
Contact a Rep
Sample Programs Online
Request a Print Sample
Contact a Rep
Sample Programs Online
Request a Print Sample
Contact a Rep
Asi se dice cover
Sample Programs Online
Request a Print Sample
Contact a Rep
Sample Programs Online
Request a Print Sample
Contact a Rep

Traditional Ordering


Shop Online


For Your Classroom & School


Our Principles


20 Thinking Questions

Grades: 

20 Thinking Questions focuses on specific manipulatives, each book presenting 20 challenging instant math investigations and featuring open-ended questions to motivate students in a whole new way.

Program Details

20 Thinking Questions features:

  • Open-ended questions to motivate students in a new way
  • A cooperative learning environment that challenges students to communicate their thinking through discussion and through writing
  • An easy-to-use format of four-page lessons, each designed to last one to two class periods
  • Teaching tips for helping students find their own answers
  • Guidelines for incorporating writing in mathematics
  • Sample discussion questions and suggestions on what to look for in student work
  • Manipulative kit available