Hi, what do you want to do?
PBS
Pbs Learning Media: Frequency
In this interactive activity adapted from the University of Utah's ASPIRE Lab, students will investigate frequency in terms of trampoline jumps, pendulum swings, and electromagnetic waves.
Other
Institute of Physics: Practical Physics
Access hundreds of teacher-tested, practical physics lessons on this well-organized, illustrated site. Find just the right demonstration, attention-grabber, or lab for any physics teaching objective at your fingertips.