Students had time to "hang out" with the lab animals for a bit before we began. It was hard to pry the chickens from the students to begin the lab.
What are these chicks doing inspecting the simple machines? 
Spikey got a nice treat
and then we got started with the serious business...
We built catapults out of Popsicle sticks and rubber-bands.
Then we lined up 
and had a marshmallow catapult contest. I am still finding marshmallows in fish tanks, behind the white board, and in the guinea pig cage...We also built pizza box solar ovens.
And we studied all the six simple machines as we tried experiments with them. Here are some students demonstrating the value of a pulley on a couple of broomsticks.
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