This site describes cohesive forces and their role in surface tension as well as the relationship between them is examined here.

These lesson plans were developed by Thirteen Ed Online master teachers. Starting with tried-and-true lessons that work in the classroom, web-savvy teachers have built web-based activities that use the rich resources of...

This video shows a demonstration of buoyancy. A small glass vessel with a hole in the bottom is partially filled with water and placed in a partially filled cylinder of water. The cylinder has a rubber diaphragm which,...

This video demonstrates the operation of a Venturi meter. The experiment shows the dependence of air pressure on the gas velocity. It is part of a collection of typical lecture demonstration videos put together by the...