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Cupcake Delivery
Source Institutions
In this design challenge, learners will create wind-powered contraptions to transport a load, such as a cupcake or another small object, and test to see if they work.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-208.png?itok=CLGi1len)
Set It Straight
Source Institutions
In this activity, learners build a simple tabletop seesaw to test how different variables (the position of the fulcrum, distance, weight) affect its balance under increasing weight loads.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-301.png?itok=ws5OTm1j)
Pencil Balance
Source Institutions
In this activity, challenge learners to make a pencil stand on its tip using only two pieces of wire and two clothespins. Use this activity to demonstrate the center of gravity.
Soaring Towers: Building with Recycled Materials
Source Institutions
In this activity, learners will build the highest tower they can out of recycled materials.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-285.jpg?itok=6iz8Z3jm)
Make a Mobile!
Source Institutions
In this activity, learners make mobiles to explore the concepts of balance, counterbalance, weight, and counterweight.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-896.jpg?itok=JIQbZ6CP)
Zipline
Source Institutions
In this design activity, learners create a vehicle that can transport a load, like a favorite toy or as a recycled object, from the top of a zipline to the bottom using only gravity.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-637.png?itok=0rZ4ozbi)
Building with Wonderful Junk
Source Institutions
In this activity (page 4), learners work in groups to plan and build large structures using recyclable materials they have brought from home.