University of Cambridge: Nrich: How Old?

Using your reasoning skills and the clues provided, try to figure out who is sitting where at this table of six. Check the solution and see if you are correct. You can choose similar games and math problems on this page, or choose math...

Sharpen your logical thinking and see if you can figure out the strategy to get to the target number before the computer.

Excellent interactive challenge working with cube nets to stack them in a specific order. Manipulate the cubes online to solve the problem.

Sharpen your logic and percent skills while working on this challenge. A strategy for solving the problem and the solution are available from links on the left.

On this one page website, logic and other problem solving skills will help you find a variety of solutions to this sweet dilemma. The University of Cambridge provides possible solutions to aid you in your decision making.

On this one page website from the University of Cambridge, you can sharpen your problem solving skills while you figure out equivalent values for the amounts shown. The solutions appear on the interactive machine.

Work with this cube problem and see if you can find a pattern. Then you can check your solution with solutions already submitted.

On this one page website sharpen your logic and equivalent fraction skills while working on this challenge. The solution is available to double check your solution.

On this one page website sharpen your logic, geometry, spatial thinking, and problem solving skills while working on this challenge. The solution is available to double check your solution.

Given an unlimited number of a specific type of equilateral, isosceles, and right triangles create as many tetrahedra as are possible. Includes printout.