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This activity explores the basic workings of a siphon, which is the core technology that makes toilets work.

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

In this crafty chemistry activity (on page 2 of the PDF), learners make their own paper from used paper they may have otherwise thrown away.

Learners make a simple battery out of "sandwiches" of aluminum foil, pennies, and a salt water-soaked paper towel.