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Modulated Coil: Hear the magnet!
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Do you have an extra portable cassette tape player hanging around?
Overlapping Spots: Make a bright spot brighter
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This perception trick focuses on conflicting information to the brain...instead of trying to see two images, you're trying to get a bright spot by overlapping the image you see through two tubes.
Afterimage
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In this optics activity, learners investigate afterimages.
Toothpick Patterns
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In this math activity, learners make toothpick designs by following simple patterns.
Tip Topper
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In this math activity, learners role-play as wait staff at the Kidtropolis Diner. It's the end of the night and it's time for the staff to collect their tips.
Achi: A Strange Game of Tic Tac Toe
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In this game, learners strategize to be the first player to make three in a row.
Subtracta's Dog
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In this math activity related to volume, learners use problem solving skills to calculate and build a model house for Minus the dog.
The Braille Alphabet
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In this activity (8th activity on the page) about the sense of touch, learners make their own set of Braille letters. Learners use glue to make raised dots on a Braille Alphabet Sheet.
Newspaper Bridges
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In this activity, learners build bridges out of newspaper and tape to explore how structures are designed to bear loads.
The Senses of "Unknown Creatures"
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In this activity, learners use earthworms as "unknown creatures" from the South American jungle to find out how animals use senses.
100 Puzzles
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In this activity, learners find as many combinations of a hundred as they can using various puzzle pieces from a hundred square grid paper.
Family Traits and Traditions
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In this activity, learners play a matching game with their families to discover common inherited traits and traditions. Learners distinguish between inherited traits and learned traditions.
The Variety and Roles of Microbes
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In this activity, learners use sets of cards to assign microorganisms to different groups.
Cohesion Coin
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In this activity about the property of water (page 6 of the PDF), learners use a coin to demonstrate cohesion between water molecules, exploring the molecular forces that allow water molecules to "