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Friday, October 18, 2013

Flying helicopters

Teacher got some helicopters ready for us to fly.
We looked at all the rectangles in each helicopter (we counted 7).
We flew the helicopters and we got them to spin in different directions by changing the flaps.  We found that they didn't fly at all if the two flaps pointed in the same direction.
  We thought about how trees like the Sycamore use helicopters to spread their seeds.

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