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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.

This is an activity in which learners explore the effects of gravity, motion and momentum while creating art.

In this activity, learners electrically plate zinc onto brass objects.

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

This is a tape and glue activity in which learners make binoculars that they can decorate and then use to go bird watching.

In this classic memory game (on pages 37-45 of PDF), learners turn over tiles to reveal images on the back.

Learners build models of sinkholes to gain an intuitive knowledge of their physical aspects.

This online simulation game explores the different consequences of water levels on the Columbia River in the Pacific Northwest.

Learners work in groups to construct bridges using stale marshmallows and toothpicks.

Learners design different shaped bandages for different purposes. First, they draw their designs on paper.

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

Learners compare the properties and solubilities of Styrofoam (TM), ecofoam packing peanuts, and popcorn. First, the solubility of each substance is tested in water.

In this activity (on page 2), one person "programs" the other like a robot to move through a space, trying to get them to avoid obstacles and reach a goal.

This activity (on pages 21-32 of PDF) has learners act out several classic brain teasers.

Using electrolysis, learners produce hydrogen gas and oxygen gas from water molecules in a solution.

Learners make a refrigerator that works without electricity. The pot-in-pot refrigerator works by evaporation: a layer of sand is placed between two terra cotta pots and thoroughly soaked with water.

Learners explore the Bernoulli effect by building an airfoil (airplane wing) and making it fly.

This quiz lets you estimate your annual radiation exposure.

This is a series of demonstrations about different electrical and magnetic phenomena.

Learners design their own experiment to investigate how pollution diffuses through ground material.