Explore different polygons and find their perimeter with this interactive lesson from T.V.411. Students see examples of polygons in everyday life and have immediate feedback to your responses to lesson questions.

What is "Logic"? What is a "Mathematical sentence"? This website provides definitions of both of these terms and defines examples of mathematical sentences ("open sentence" and "closed sentence") and provides examples of each. Use the...

In this video segment [3:25] from Cyberchase, a plant expert shows Bianca the patterns and symmetry found in nature.

The CyberSquad has to deal with angles and distances to locate a treasure chest in this video segment from Cyberchase.

Generate a worksheet for practice in how to plot coordinate pairs as you copy an image. Choose an image, the type of grid, the number of quadrants, and the layout, then download your worksheet in PDF format.

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.

Get your spy glasses ready! For this weeklong adventure, children will explore shapes and their attributes and use this knowledge to decode a secret message. Children will learn about two-dimensional (flat) and three-dimensional (solid)...

Determine which angle has a greater measure by looking at the size of the opening between the angle's rays. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

How would you find the area of a polygon or circle? Explore this concept with engaging activities at this test prep site. Here you will find detailed problem solving strategies with accompanying visuals, a reference table with formulas,...

This collection of computational science resources discusses a variety of topics, from fractions to telling time to conducting scientific experiments. Videos provide narration in ASL. Requires Quicktime.

Sharpen your logic and geometry skills by finding the area of a triangle. Solution available.

This is a great place to practice using the formula for finding the volume of a cylinder. A hint is available as well as the correct answer for each problem.

Develop problem solving skills working with pentagons and then check your results.

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.

Test your logic, polygon properties, and pattern recognition skills working on this challenge. Solution included.

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.

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.

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.

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.

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.

The challenge at this one page website, is to see how many trapezoids (British-trapeziums) you can find in the figure. When you have your results, you can easily check it right at the website.

Practice picking and using the correct formula for finding the solution for each of the examples presented. Read the interactive quiz rules and then click on the "Begin" ticket. If you answer incorrectly you get one more chance to try...

Third graders are preparing to build bat houses. They have calculated surface area, identified nail placement, and will now collect data on angle types in this real-world activity.

Understanding area and perimeter can help children work on solutions to very important, real world problems.