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Pathways with Friends
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Directed by instructional cards, learners kinesthetically model cell communication by acting as components in a cell signaling pathway.

Our Sense of Sight: How We Perceive Movement, Depth and Illusions
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In this activity, learners investigate visual perception as well as plan and conduct their own experiments.

Buoyant Bubbles
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What keeps bubbles and other things, like airplanes, floating or flying in the air?

Food Webs
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In this activity, learners construct possible food webs for six different ecosystems as they learn about the roles of different kinds of living organisms.

Breakfast Proteins
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In this activity, learners construct a cereal chain as a model of how proteins are made in the cell.

Exploring Size: Powers of Ten
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In this activity, learners play a card game that explores the relative sizes of various objects. Learners compete to organize their hand of cards into lists of objects from largest to smallest.

Exploring Moisture on the Outside of a Cold Cup
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In this activity, learners explore the relationship between cooling water vapor and condensation. Learners investigate condensation forming on the outside of a cold cup.

String Shapes
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In this activity, learners work together to make polygons (many-sided shapes) with string. Learners sit on the floor and hold onto a piece of string slid between their thumbs and index fingers.

Secret Goldenrod Messages
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In this activity, learners write invisible messages on goldenrod paper, and make the message appear and disappear using acids and bases.

Average Names
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In this activity, learners compare the number of letters in the names of the people in their families or group of friends.
Signs of Change: Studying Tree Rings
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In this very hands-on lesson, learners will investigate dendrochronology (the study of tree rings to answer ecological questions about the recent past) and come up with conclusions as to what possible

Big Bubbles
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How do you measure a bubble when it's floating? You can't really, but in this activity, learners can measure the diameter of the ring of suds a bubble leaves on a flat surface.

Pop Rockets
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In this activity, learners make film canister rocket ships. A fin pattern is glued onto the outside of the canister, and fuel (water and half an antacid tablet) is mixed inside the canister.

Exploring Size: Memory Game
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In this activity, learners play a card game that explores different size scales--macro, micro and nano.

How Small Can You Cut?
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In this lesson, learners cut paper into very small pieces to explore the small size of quarks, the smallest thing we know of on Earth.

Sing - Suchomimus Was His Name
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In this activity (located on page 2 of PDF), learners sing together a song that gives details about the dinosaur species Suchomimus (pronounced “Sook-o-mime-us”).
Penny for Your Thoughts
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In this activity, learners will explore how metals react with each other. They will see these metals change before their eyes as they coat a paperclip with the copper taken from a penny.

Mighty Seeds
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In this biology experiment, learners plant soybean seeds in plaster of Paris, witnessing firsthand the mighty power and ability of plants to grow in adverse conditions.

Nature Journals
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In this activity, learners construct a home-made journal with simple, everyday materials.

Waterbottle Membranophone
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In this activity, you'll use a straw, a water bottle and a paper tube to make an instrument that's very much like a saxophone.