Giving a presentation on electronics. Any suggestions?

[kyle1997]

My team coach recently asked me to prepare a 1-2 hour presentation on electronics. I know how they work but what are some good activities that 20-25 can do in order to learn electronics. Bear in mind that it has to be very cheap to do and we have very limited resources. Thank you for your help.

[Phyrxes]

The University of Colorado at Boulder has a nice collection of simulations that you may find helpful.

http://phet.colorado.edu/en/simulations/category/physics/electricity-magnets-and-circuits

[Al Skierkiewicz]

kyle,
Do you have a budget for this presentation? Should it be for robot electronics only or general discussions?