The video is being made. Until it arrives, here is what it will say (117 words, about 58 seconds):

Here's Eden in Miss Torres's class on a windy morning. She holds her paper pinwheel out of the open window, and it spins so fast that you cannot see the blades.

Miss Torres watches it. Then she puts a paper cup on her desk and says, could that spinning lift this cup?

Eden is not sure. The pinwheel is only paper, and the wind is only air. But the wheel is turning, and turning can pull a thread.

To find out, we will look at what moving air and moving water can turn, where the energy goes, and how to build a design and test it.

Okay, so are you ready to build a wheel that lifts?

It ends with a ready line. Then pick a reply below — any reply counts.