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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.

Learners design, build, and test models of "dragon boats" made from up to three milk cartons.

In this activity, leaners explore building techniques by recreating the story of The Three Little Pigs.

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.

In this experiment, learners design and build a model room in a shoebox and furnish it with tiny furniture.