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Parabolas: It's All Done with Mirrors
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In this activity about light and reflection, learners use a special device called a Mirage Maker™ to create an illusion.

All Tangled Up
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In this activity on page 60, learners examine and simulate wildlife entanglement by experiencing what it might be like to be a marine animal trapped in debris.

Dress Like a Frog
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In this activity, learners will discover what it takes to be a frog. By dressing up like one, learners can visualize how each part of the frog plays an important role in surviving its habitat.

Carbon Dioxide Removal
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In this experiment using sprigs of Elodea, learners will observe a natural process that removes carbon dioxide (CO2) from Earth's atmosphere.

See the World Through Color-Filtering Lenses
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In this activity, learners examine how colored lenses act like filters and absorb all colors of light except for the color of the lenses.

Colored Shadows Investigation
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This activity (located on page 3 of the PDF under GPS: Light and Color Activity) is a full inquiry investigation into mixing colors with light.

Invisible Sunblock
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In this activity, learners find out why some mineral sunblock rubs in clear. Learners compare nano and non-nano sunblocks and discover how particle size affects visibility.

Stethoscope
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Make a copy of the first stethoscope with only a cardboard tube! René Laennec invented the first stethoscope in 1819 using an actual paper tube!

Biodomes Engineering Design Project
In this design-based activity, learners explore environments, ecosystems, energy flow and organism interactions by creating a model biodome. Learners become engineers who create model ecosystems.

A Scientific Cleanup
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This is a comprehensive lesson plan on page 85 for a group cleanup trip to a local beach, lake or stream. Learners keep track of the types and amounts of trash picked up and analyze this information.

Go with the Flow
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In this activity, learners discover how hard their hearts work to pump blood.

Yabba-Dabba You
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In this activity, learners explore genes and traits. Learners investigate their fingerprints and learn how to categorize them.

Pinhole Magnifier
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In this activity related to light and perception, learners use a pinhole in an index card as a magnifying glass to help their eye focus on a nearby object.

How Big Were the Dinosaurs?
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In this activity (located on page 4 of PDF), learners gain insight into the actual size of dinosaurs and practice making estimations and measurements.

Pea Brain!: Explorations in Estimation
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In this activity, learners use two different techniques to estimate how many little things fit into one bigger thing.

Tiny Pants Photo Challenge
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In this activity, learners use a simple trick of perspective to dress friends in tiny cutout clothing. Learners make tiny pants out of card stock and tape them to the end of a stick.

Thaumatropes
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In this activity, learners will make a thaumatrope, an old-fashioned optical illusion that dates back to the 1820s.
Are you a Supertaster?
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In this activity, learners examine their tongue and taste buds.

Dye Like A Natural
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In this activity, learners stain fabrics--on purpose!

Zap!
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This online game tests reaction time. The learner controls a computer-generated frog, and must press a button as soon as a fly appears on the game's radar screen or can be heard from the speaker.