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University of Cambridge
University of Cambridge: Nrich: Triangles to Tetrahedra
Given an unlimited number of a specific type of equilateral, isosceles, and right triangles create as many tetrahedra as are possible. Includes printout.
University of Cambridge
University of Cambridge: Nrich: Net Cuts
In this enrichment game, the nets for nine solids are displayed. The twist is that each net has been cut into two pieces. The challenge is find the pieces that go together.
Maths Challenge
Maths challenge.net: Square Laminas
Solve this square lamina problem using your visualization skills and other mathematical prolem solving strategies.
University of Cambridge
University of Cambridge: Nrich: Little Squares
What are square numbers? Use tiles at this one page website to discover the pattern of square numbers. See if you can solve the challenge. Once you have your solution you can check the solution given right at the website.
University of Cambridge
University of Cambridge: Nrich: All in the Mind
You will have to use visualization to help you solve this challenge. At this one page website, you will be able to check your solution.
University of Cambridge
University of Cambridge: Nrich: Green Cube, Yellow Cube
Think about the surface area of a cube. At this one page website, you use that information to complete the challenge. Solutions are offered right at the website.
University of Cambridge
University of Cambridge: Nrich: Three Cubed
Use the shapes provided and figure out how they fit together to make a 3 X 3 cube at this one page website. The solution is readily available right at the website.
University of Cambridge
University of Cambridge: Nrich: Star Find
This one page website offers two interesting tiling problems. The solution is provided here as well.
University of Cambridge
University of Cambridge: Nrich: Gnomon 1
This interactive activity gives you an opportunity to explore a specific number pattern named the "Fibonacci sequence." See what other patterns you can discover while you manipulate the blocks. There is a "Printable Page" link if you...
University of Cambridge
University of Cambridge: Nrich: Dicey
If you can visualize a cube and turn it around in your mind, then this is the challenge for you. This one page website has the solution available to check your thinking.
University of Cambridge
University of Cambridge: Nrich: A Puzzling Cube
See if you can figure out which symbols are on which cube face at this one page website. The solution is just a click away once you have your solution in mind.
University of Cambridge
University of Cambridge: Nrich: Christmas Presents
Improve your logic and net recognition skills with this learning game. Solution included.
University of Cambridge
University of Cambridge: Nrich: Making Boxes
Have fun and learn by making a box and then find out its maximum volume as well as other problem-solving activities, including making a table of your results and drawing a graph.
University of Cambridge
University of Cambridge: Nrich: Making Cuboids
How many different cuboids can you make? Learn how and learn how to represent data with your results.
University of Cambridge
University of Cambridge: Nrich: Building Stars
This interactive activity gives you an opportunity to color in a tessellation that is different from the usual. Read the short introduction to find out more about this tessellation that doesn't repeat.
University of Cambridge
University of Cambridge: Nrich: Shapely Tiling
On this one page interactive website expand your logic, Motion Geometry and pattern recognition knowledge while working on this challenge. The solution is available to double check your solution.
University of Cambridge
University of Cambridge: Nrich: Tessellating Triangles
The challenge at this one page website, involves tessellation and triangle. Should you accept this challenge, you will find helpful teacher notes and the solution available right at the website.
Khan Academy
Khan Academy: Decompose Figures to Find Volume (Unit Cubes)
Find the volume of irregular 3D figures made up of unit cubes by dividing the figures into rectangular prisms and finding the volume of each part. Students receive immediate feedback and have the opportunity to try questions repeatedly,...
National Institute of Educational Technologies and Teacher Training (Spain)
Ministerio De Educacion: Matemagicas
Find out the magic of mathematics. On this site you will find magic tricks, games, animated optical illusions, paradoxes and a lot more.
University of Cambridge
University of Cambridge: Nrich: Making Squares
On this one page website sharpen your logic, spatial sense, and pattern recognition skills while working on this challenge. The solution is available to double check your solution.
University of Cambridge
University of Cambridge: Nrich: New House
On this one page website sharpen your logic and spatial sense skills while working on this challenge. The solution is available to double check your solution.
Cool Math
Coolmath: Coolmath4kids: Tessellations
Tessellations are explained and described at this website. Three basic rules are given for creating tessellations.
University of Cambridge
University of Cambridge: Nrich: Seven Sticks
On this one page website sharpen your logic, triangle properties, and pattern recognition skills while working on this challenge. The solution is available to double check your solution.
University of Cambridge
University of Cambridge: Nrich: Games the Triangle Game
Use this game to improve your knowledge and understanding of triangles and naming vertices. Just read and follow the instructions! [Requires Java.]