I’ve made no attempt to hide the ups and downs of museum and early childhood education. I’ve talked openly about museum visits that go wrong and the ups and downs of classroom management. But, can I tell you how excited I am to share something that went RIGHT today?
I’m teaching a workshop series on the “science of superheroes” and this week we were digging into the “gadgets.” The kids were buzzing with all the gadgets used by their favorite superheroes and shared how Wonder Woman had the invisible jet and Batman “had the really bright light and he shined it, like this, and the bad guy went AHHHHHHHHHHHHH and covered his eyes!” (Just go with it….)
But, we weren’t building a ray gun or a Batmobile or even a super-computer concealed in a wristwatch. Instead, we dove into the world of simple machines. Over the course of the hour we learned about three of the classic simple machines: a pulley, a lever and an inclined plane. I kept things very simple, introducing the concept, showing them the example I had brought and then letting them play with it.
Here is what we did!
Lever: A classic spoon “catapult” using 9 Popsicle sticks, 5 rubber bands and 1 plastic spoon. Directions can be found here. I found it useful to show them a more basic lever first using a triangle and rectangle block (recreating a classic teeter-totter…sorry, I forgot to take a picture!)
Pulley: I roped together two heavy books using clothesline from the drugstore. First, I had them try lifting the books just with the string. Then, I ran the line over a rolling pin. One scientist held the rolling pin while the other pulled the rope. The only thing you have to watch out for is the books crashing down on someone’s toes!
Inclined Plane: This was the brilliant idea of Peggy Ashbrook! I bought a length of Cove Molding from my local hardware store and had them cut it into 1ft lengths. Marbles are the perfect fit to run long the grooved track. Using blocks, the scientists could construct elaborate ramps to run the marbles down. All on their own they came up with new tests, like what would happen if they used a steeper angle!
As you can see, all three simple machines are built with things you find around the house or at your local home-improvement store. A great book to bring it all together with is “Rosie Revere Engineer,”I just discovered it and think its amazing.
Thanks to Pinterest, and Peggy Ashbrook (my co-teacher from TSA Summer Camp) for the inspiration!
Great ideas Sarah, and I wish I could take credit for the ideas of using those ramps materials for science and engineering investigations…but I learned about this work from researchers at the University of Northern Iowa’s Regents’ Center, where they have a Center for Early Education in Science, Technology, Engineering and Math (CEESTEM). See more information at:
I’ve used the ramp materials in preschools with ping-pong balls, in family science events, and in after school programs.
Where did you purchase the cove mouldings?
I got mine at Home Depot. They come in very long pieces but they are able to cut them to whatever size requirements you have in the store. I would check your local hardware/home improvement store!
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Thanks for the idea of using a rolling pin as a pulley – I included it in my posts about kids activities to teach about pulleys as simple machines: https://inventorsoftomorrow.com/2016/09/26/pulleys-2/
I’m glad that you found it helpful!