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In this engineering design challenge, learners animate a facial expression and make a machine (zoetrope) that plays the animation back.

In this engineering design challenge, learners build an air-powered spinning machine.

In this activity (located at the top of the page), learners make an easy river strainer and see what they can catch.

In this activity, learners build bridges and cantilevers in a series of "building out" challenges with straws and pins.

This activity (on pages 10-12 of the PDF) encourages learners to consider what makes living things different from non-living things.

In this activity about the solar system, learners use various light sources to examine ice with different components to understand how NASA studies planets and moons from space.

In this activity, learners will explore the water cycle by creating a small atmosphere.

In this engineering design challenge, learners make a bird and then control its flight with attached strings.

In this fun and, at times, hilarious force and motion activity, learners will use household objects to build a crazy contraption and see how far they can get a tennis ball to move.

In this activity, learners follow simple historical maritime recipes to cook up hardtack and swanky, and then compare the foods they eat to what was served on ships in the past.

In this activity, learners explore work, forces, simple machines, and construction. This lesson guide includes simple ways to demonstrate these principles as well as hands-on activities.