Click on a title to view a lesson. Filter and sort your search using the forms at the left.

displaying 51 - 52 of 52 lessons
title description rating updated author
The Thaumatrope

This lesson contains plans and materials for constructing a thaumatrope, a Victorian era animation toy that blends two images together by making use of human persistence of vision. All that's needed is an index card and some string.

Average: 3.3 (4 votes)
23-Oct-2013 guy vitruvian geek thaumatrope
Super Absorbent Polymers - Diapers and Instant Snow

Superabsorbent polymers (SAP's) are used to absorb and retain liquid in a variety of applications, including baby diapers and potting soil. One common SAP, known commercially as "instant snow", is sold as a white powder that can absorb several hundred times its weight in...

Average: 4.3 (24 votes)
23-Oct-2013 guy baby with diaper