For the combustion demo:

• sterno or other heating source
• 250 ml erlemeyer flask with a 1-hole stopper
• pre-heated water (near boiling) in a thermos
• ring stand to hold pinwheel and flask above heating source
• pinwheel

• various electrical, mechanical or battery-operated devices (one per group); examples: battery-operated flashlight, shaking flashlight, light-solar panel-LEGO motor set-up, personal heat packet, Genecon generator, hairdryer, glow stick
• Energy Conversion Student Worksheet