This web page, authored and curated by David P. Stern, provides instructions for building an electrophorus from common household items. This type of capacitor was invented by Volta and may have been used to amplify...

This site, from UCLA's Department of Physics, contains web and in-class demonstrations of physics concepts in the topic areas of mechanics, harmonic motion and waves, electricity and magnetism, acoustics, optics, matter...

This site from the Exploratorium provides an activity in static electricity. Everyday materials – a Plexiglas™ sheet, a piece of wool cloth, and puffed rice – are used to show the effect of electrical forces between...

This website from Kathleen Cummings Dominguez at the Illinois Institute of Technology provides a lesson plan on the concepts of friction. It describes a lesson plan which will engage students in active classroom...

This is a lab designed to teach students to recognize that weight and surface affect friction and not surface area. The experiment uses wood blocks on a variety of surfaces.