Khan Academy
Khan Academy: Cross Sections of 3 D Objects (Basic)
Basic practice problems involving cross sections of 3D objects.
CPALMS
Cpalms: Building Graduation Caps
[Free Registration/Login Required] In this lesson, students build geometric models of graduation caps using stiff paper. The activity requires the application of skills in finding surface area, understanding similarity, knowing the...
McGraw Hill
Glencoe Online Study Tools: Volume of Cylinders
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.
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: 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.
Math2
Math2.org: Areas, Volumes, Surface Areas
This site gives formulas for the area, volume, and surface area of various shapes.
ClassFlow
Class Flow: 3 D Shapes
[Free Registration/Login Required] In this flipchart, students are introduced to the following 3-D shapes, including spheres, cylinders, and rectangular prisms.