National Council of Teachers of Mathematics
The Math Forum: The Cylinder Problem: High School Lesson
Using an engaging approach, this instructional activity requires students to record the volume of cylinders as a function of the radius. Students will construct and measure the volume of several cylinders and then begin comparing these...
Khan Academy
Khan Academy: Pythagorean Theorem in 3 D
In this exercise, students practice using the Pythagorean Theorem to find the side lengths of triangles within a 3-D solid. Students receive immediate feedback and have the opportunity to watch a video, get hints, or try questions...
CK-12 Foundation
Ck 12: Geometry: Representing Solids Study Guide
[Free Registration/Login may be required to access all resource tools.] This study guide gives an overview of isometric view, orthographic view, cross-section, and nets.
NC State University
The Engineering Place: Shapes
A lesson in creating 3-D solids using toothpicks and marshmallows.