There are profuse instructions, and some prewritten spreadsheets are available as well. The Elements of Machines - Some simple machines, explained, decribed and illustrated. Graphs and Figures - An amusing, yet sincere, look at where students go wrong when producing scientific graphs for school, college and degree level work. The project aimed to promote physics not only to scientists but also to the industry, schools, students and any individuals interested in physics and natural science. Excellent starting point for many physics-related topics.
Chapters are downloadable pdf files.
The Physics Encyclopedia - This site provides exhaustive, comprehensive, carefully selected and structured lists on Internet physics resources. The Science Songwriters' Association - Promotes the use of music in science education. Covers everything from the most basic concepts of what sound actually is to the specifics of how humans perceive it. Theory of Particle Size Analysis - Small particles are difficult to measure, especially in bulk. Here is a way to do it.