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Up and Down Donkey
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In this game, learners build up six stacks of cards in the middle of the table, face up, in order from 1 at the bottom to 20 on the top. The first player to get rid of all his cards is the winner.

In the Middle
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In this game-like activity (5th activity on the page), learners explore their auditory acuity as well as the importance of having two ears.

Underwater Fireworks
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In this activity, learners investigate diffusion by creating underwater "fireworks" using food coloring, oil and water.

Bubble Tray
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In this activity, learners use simple materials to create giant bubbles.

Which Powder is It?
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In this chemistry challenge, learners identify an unknown white powder by comparing it with common household powders.

Cartesian Diver
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In this demonstration, learners observe the effects of density and pressure. A "diver" constructed out of a piece of straw and Blu-Tack will bob inside a bottle filled with water.

Amazing Marshmallows
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In this demonstration, learners observe the effects of air pressure. They will watch as marshmallows inside a bottle expand as a vacuum pump removes air from the bottle.

Plant Power
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In this chemistry challenge, learners identify which plants have the enzyme "catalase" that breaks hydrogen peroxide into water and oxygen.

Paper Animals
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This resource contains ideas and brief instructions on how to build animals out of construction paper and other simple materials.

Floating Paper Clip
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In this activity, challenge learners to float a paper clip in a cup of water. Learners discover that a paper clip will sink in a cup of water, except when it is placed on a piece of paper towel.

Morphing Butterfly
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In this activity, learners explore how nanosized structures can create brilliant color.

Robot Hands
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This activity (on page 2) explores how sensing is part of robotics. Learners try tying their shoes with different constraints.

Who Goes There?
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In this outdoor, night activity, learners track nocturnal animals' footprints, droppings and other signs of their presence.

Views From Windows
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In this activity, learners use their imaginations and picture a scene in their heads.

Odors Aloft
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Learners smell balloons filled with different scents to guess what's inside. From this, they infer the presence and motion of scented molecules.

Film Canister Farming
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In this hands-on botany activity, learners sprout vegetables in film canisters.

Shadow Dance
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In this activity, learners experiment with shadows and light sources to understand the relationship between the angle illumination and the shadow's length.

Patterns and Relationships: Peddling Petals
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In this math lesson, learners use the setting of a flower-making fundraiser to explore a variety of patterns. Learners examine the patterns in a flower design made of triangles surrounding a square.

Straw Kazoo
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In this activity, learners make some music by constructing a kazoo out of a simple plastic drinking straw. Use this activity to explore sound, vibrations, and music.

Ice Melt
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In this activity, learners will explore basic information about thermodynamics by experimenting with ice. Learners will compare ice melting rates on metal pans or plastic cutting boards.