You will finally see how all those milk cartons we have been collecting are going to be used!
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| These 44 milk cartons are ready to become windmills! |
This unit started out with reading a story to set up our problem. We learned of two cousins in Denmark who were looking for a way to build a windmill that would lift something out of a pond. Through lots of investigation we discovered how to best "capture the wind" using various materials. The students first built sails and we tested them on a sail track. We learned about material, size, angle, and sturdiness when making best use of the wind energy. Sometimes it took several tries to get it right! When we found a certain material that worked best or a type of construction that seemed to work, the students shared their findings. We were then ready to construct our windmills!
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| A collection of sails |
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| Sail testing day! It's hard to see, but the track is made of fishing wire. |
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| The first sail to be tested! |
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| A totally different type of sail to be tested |
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| Students look on to see if their sail can move across the track! |
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| Windmill testing day! |
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| Windmill testing day! |
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