|A1's Nitrogen Cycle|
|Z's Carbon Cycle, with a Lift-the-Flap Spinny-Wheel thingy|
|I took the wheel part off so we can see the great info underneath.|
Nitrogen Cycle (to the tune of Blue Eyes - I'm now loving that song)
Carbon Cycle (watched this several times, but I wasn't as keen on the "bad people causing Global Warming speal at the end)
The kids found this video (its a high school introductory science video to the tune of Carbon is a Girl's Best Friend).