Exploratorium
Soda Can Mirrors
Here is an entertaining and illuminating lesson on morphed images. Middle schoolers make cylindrical mirrors by wrapping soda cans in reflective mylar. First, they try to determine what the images are that are embedded in the plan by...
Mathematics Vision Project
Module 5: Modeling with Geometry
Solids come in many shapes and sizes. Using geometry, scholars create two-dimensional cross-sections of various three-dimensional objects. They develop the lesson further by finding the volume of solids. The module then shifts...
City University of New York
Choosing a Map Projection: In Search of a Good Map Projection
College-level geography tipsheet for developing an appropriate map projection.
Other
University of Connecticut: The Geographer's Craft: Map Projection Overview
An advanced overview of map projections with illustrative graphics. Created by Peter H. Dana, Department of Geography, University of Texas at Austin in 1995.