this is perfect

"By exploring the properties of light emitting diodes, tunneling diodes, solar cells and even glow-in-the-dark toothbrushes students learn about effects which cannot be explained with classical physics." from http://phys.educ.ksu.edu/info/summaryOfVqm.html

Exactly what I want to learn/demystify:

I have a few trinket's I've been carrying around that I've been waiting for the perfect moment to bring out in class and [demand/request/finally] an easy to understand explanation:

• my laser pointer pen
• my card swiper very tiny that lets me into my garage
• my magnetic arthritis bracelet
• a strange pink magnetic exercise round

Can't wait for class tonight!