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Bend It, Break It
Source Institutions
In this activity (on pages 25-32 of PDF), learners make models of the inner ear out of pipe cleaners.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-992.png?itok=_bivqQmt)
Make Your Own Butterfly
Source Institutions
In this activity (on the left side of page 5, continued on the right side of page 4 of the PDF), learners make models of colorful butterflies.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-674.png?itok=ipAX94mK)
Wingin' It
Source Institutions
Learners explore the Bernoulli effect by building an airfoil (airplane wing) and making it fly.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-688.jpg?itok=28Wj8pQS)
Inner Space
Source Institutions
In this activity, learners discover that there is space between molecules even in a cup "full" of water. They first fill a cup with marbles, and then add sand to fill the gaps between the marbles.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-887.jpg?itok=pPZs6AKM)
Bridge the Gap
Source Institutions
Learners work in groups to construct bridges using stale marshmallows and toothpicks.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-675.jpg?itok=gt3CzHb-)
Draggin' Boats
Source Institutions
Learners design, build, and test models of "dragon boats" made from up to three milk cartons.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-479.jpg?itok=dcij08Fa)
Make Your Own DNA
Source Institutions
Learners match puzzle pieces to outlines of a DNA strand. The puzzle pieces represent the four chemicals making up DNA base pairs: adenine, thymine, guanine, and cytosine.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-695.jpg?itok=qsYuCBmm)
Bring it into Focus
Source Institutions
In this activity (page 2 of PDF), learners play with a lens and a piece of paper to focus an image on the paper. Learners look at different things, and see how the lenses affect the image.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-726.jpg?itok=MuMnAB2R)
Heavy Metal
Source Institutions
In this activity (on pages 25-31 of PDF), learners soak sponges with different amounts of plaster of paris to simulate different levels of calcification in bone formation.