Applications of wheels are shown to be an invaluable tool in teaching the processes and technology of science. (DF)

Describes several demonstrations designed to dispel student misconceptions relating to falling bodies. An object moving with a horizontal velocity is shown to fall to the earth as quickly as a free falling object dropped from the same height. (JR)

Describes two experiments in physics, using the same inexpensive apparatus, that may be performed as projects by high ability secondary science students. (JR)

Explained are the differences between and offered are examples of longitudinal and transverse sound waves. Described is the construction of the Crova's Disc, a device used in the teaching of the propagation and properties of sound waves. (DS)

Describes how students can make and use Hooey Machines to learn how mechanical energy can be transferred from one object to another within a system. The Hooey Machine is made using a pencil, eight thumbtacks, one pushpin, tape, scissors, graph paper, and a plastic lid. (PR)