Players use a series of higher or lower clues to guess a number between 1 and 10.

Sharpen your problem solving and logic skills on this network activity. There is a "Printable Page," link if you want to print it out to help you with your strategy.

Only by replacing these letters with the correct digits can you make this problem add up correctly! The solution is located right at this one page website.

Practice your problem solving skills while you help Ram figure out how many pennies to put in each bag. The solution is right on this one page website.

Use your problems solving skills to make everything add up correctly for this challenge. The solution is right at this one page website.

Use your problem solving skills to figure out this challenge. A number of solutions are available right at this one page website.

Use those problem solving skills to find a solution to this triangle problem. When you have your solution you can check it right on this one page website.

How does the mind work - and how does it learn? Teachers' instructional decisions are based on a mix of theories learned in teacher education, trial and error, craft knowledge, and gut instinct. Such gut knowledge often serves us well,...

Dozens of statistical terms are defined and illustrated in this glossary.

Detailed discussion of misunderstandings around what happened during the European witch hunts.