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In this activity, learners complete a series of drawing activities to explore scale and powers of 10. Learners first trace each other on 1-meter-square pieces of paper.

In this activity, learners experiment and observe how the color of materials that cover the Earth affects the amounts of sunlight our planet absorbs.

In this activity (on page 134 of the PDF), learners explore reaction time.

In this activity described on pages 2-3 of the PDF, participants debate whether there there's life elsewhere in the universe.

This activity is about collecting and analyzing DNA as part of a criminal investigation.

In this activity (12th on the page), learners investigate their ability to discriminate (see) different colors.

By making models of light waves with paper, learners can understand why different colors appear in bubbles.

In this activity (posted on March 27, 2011), learners follow the steps to construct a mini zoetrope, a device that produces an illusion of action from a rapid succession of static pictures.

In this math activity, based on the research of famed astronomer Frank Drake, learners calculate the possibilities of finding intelligent life elsewhere in the universe besides Earth.

Learners turn over a random selection of cards from a larger set. From the words revealed, they try to determine the sentence represented on the larger set of cards.

In this matching game, learners study the limits of life on Earth to see what other places in the solar system might sustain microbial life.

In this activity about neuron/target muscle recognition (page 44 of the PDF), learners arranged in two rows facing away from each other use string to simulate neural development.

In this design challenge activity, learners build a rubber band-powered rover that can scramble across the room.

Testing magnets is always a fun pastime, but here, we're going beyond "will it attract the magnet?" In this activity, learners will investigate which materials allow magnetic fields to pass through or

In this physics activity, learners will explore buoyancy.

Learners will do an experiment to determine which type of paper is strongest while focusing on variables and collecting data.

In this activity about vision and optical illusions, learners conduct a simple test to demonstrate how our eyes create "afterimages." Learners stare at a black cardboard bat for at least 30 seconds an

Build a hydrometer (measures the density of a liquid) using a pipet or eyedropper.

In this activity, learners use heat to separate zinc and copper in a penny. This experiment demonstrates physical properties and how physical change (phase change) can be used to separate matter.

In this activity, learners investigate visual perception as well as plan and conduct their own experiments.