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Science

Engineering Challenge: Build a Marble Run

Build a marble run that will allow a marble to move from one place to another without falling.

Materials: You will need materials to make the ramps and tubes. This can be cardboard tubes, rolled recycled paper, or cereal and tissue boxes that you cut apart to make ramps. You can also use paper cups and recycled cans and milk cartons. You will also need tape, scissors, and a marble.

Plan: How are you going to build your marble run? Will it be able to stand on its own or will it be attached to a wall, your refrigerator, or a table and chairs? Where do you want the marble run to start, and where do you want it to finish?

Make: Cut some pieces of tape so you have it handy to use. If you need to cut some tubes in half to make ramps do that first. Then build your run!

Test: This is the most fun part. Test your run. Did your marble stay on the run? Do you need to make adjustments to your run so the marble makes it all the way to the end?

Reflect: What did you learn when you were building this marble run?

Redesign: Try to redesign your run so the marble takes a longer or a shorter time to get to the end. What did you change so that you met your goal?

Check out some interesting marble runs here and another example here.

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