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Make a Snake String & Snake Survey
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In this activity, learners will construct a measuring device (snake "string") to improve their observation skills.

Make your own Antelope Horns!
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In this craft activity, learners will explore the structure and purpose of antelope horns by constructing their own headband using toilet paper rolls and yarn.

Invisible Ink
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In this hands-on activity (on page 2 of the PDF), learners experiment with lemon juice and paper to create a message that can only be revealed using chemistry.

Pipes of Pan
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Create an instrument that you don't play--you just listen to it through tubes of various lengths.

Falling Rhythm
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Listen to the beat of gravity. By taking two strings with weights tied to them at different, yet uniform intervals, you can hear the uniformity (and rhythm) of gravity's accelerating pull.

Balancing Act
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In this activity, learners will build thier own balance scale. Learners will explore weight and comparison through this activity.

Water Exploration Station
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In this activity (located on page 3 of the PDF), learners investigate the way water moves and how we can control and direct water.

Puppet Play
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In this activity, learners will make a marionette puppet and put on a show. Learners will explore color, design, fabrication and storytelling through this activity.

Magnetism Hunt
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In this activity about magnetism (page 4 of the PDF), learners will experiment with magnets and different objects to find out that not all metals are attracted to magnets.

Toma Todo
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In this activity, learners play a traditional Mexican game of chance with a twist. Learners take turns spinning a special "Toma Todo" top.

Black Holes: No Escape
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This fun and simple hands-on astronomy activity lets learners experiment with marbles and weights to discover some basics about gravity and black holes.

Float Your Boat
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In this physics activity, learners will explore buoyancy.

Create a Food Diary
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In this nutrition activity (page 3 of the PDF), learners will record their food consumption for one day, and then evaluate how their actual diet matched up with the recommended diet.

Garden Poles
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In this activity, learners build large-scale structures and cantilevers in a series of "building out" challenges with garden poles and tape.

COSI's Bubble Recipe
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Everybody loves bubbles, and this is the best bubble recipe ever!

Sumo
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In this version of a Sumo wrestling bout, players use mathematical skills to move their opponent's counter beyond the track and "out of the ring." Learners reveal playing cards and the player with the

Touch Boards
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Use this activity (13th activity on the page) to introduce learners to the sense of touch. Learners collect objects of varying textures like feathers, rocks, sand, etc.

Symmetry Fold-Overs
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In this math activity, learners experiment with the concept of symmetry.

Magnetisphere
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In this activity about magnetism (page seven of the pdf), learners experiment with magnets to better understand how magnetic fields work.

Topographic Investigation: Map an Underwater Surface
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In this activity, learners create a map of a hidden surface using a "sounding stick" -- a technique similar to how underwater maps were once made.