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Strong Shapes
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Is a square stronger than a triangle? Use tongue depressors to build simple shapes. Then apply a little weight to them and see what happens!

Discovery Time: Trees
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In this activity, young learners (2 years and up) explore tree structure and biology. Tree products are explored by painitng with fruit.

Bird Watch
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In this group or individual activity, learners are encouraged to watch birds near home or school—possibly where birds are nesting in a tree, pecking in a park, feeding from a feeder, or flying through

Exercise in Creating Drawings for Field Notebooks
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Learners draw and describe a leaf, and then re-find leaves drawn and described by other learners. Learners can observe leaves outside, or leaves may be brought into the classroom.
Pace-Off!
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In this math activity, learners use non-standard measurement (paces) to find the distance from one point to another. Learners practice estimating and measuring distances .
More Bubbles!
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In this math activity, learners make their own bubble wands and determine if the size of the wand affects the number of bubbles it produces.

Control a Bird’s Flight
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In this engineering design challenge, learners make a bird and then control its flight with attached strings.

Where Does the Wind Blow?
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In this activity, learners investigate wind by comparing the force of wind in different locations. Learners build wind-o-meters out of wooden sticks and strips of paper.

Two Ears are Better Than One: Sound Localization
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This activity (9th activity on the page) about hearing demonstrates to learners the importance of having two ears.

Bird Feeders
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In this activity, learners build a bird feeder or feeders to attract birds for observation.

Crystal Creations: Grow Spikes of Crystals in the Sun
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This activity shows you how to make amazing crystal spikes using Epsom salt and the sun.

Make a Green Gumball Black
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In this optics activity, learners use a shoebox, colored cellophane and sunlight to "change" the colors of gumballs. Learners will be surprised when the green and blue gumballs appear black!
Press Seaweed
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In this activity, learners will collect, dry and press seaweed over the course of four days in a similar way that artists/crafters press flowers.

Animal Attraction
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Investigate a flower's power of marketing by making an imitation flower that successfully signals a bee (or other pollinator of your choice) to visit.

Gravity in Action
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Explore the effects of gravity on a slowly falling object: a parachute you make out of plastic bags, string and stones.

Where Are the Distant Worlds? Star Maps
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This fun hands-on astronomy activity lets learners use star maps (included) to find constellations and to identify stars with extrasolar planets (Northern Hemisphere only, naked eye).

Start a Rock Collection
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Learners follow a three-step process to start their own rock collection.

How Can Gravity Make Something Go Up?
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In this activity, learners use cheap, thin plastic garbage bags to quickly build a solar hot air balloon. In doing so, learners will explore why hot air rises.

Soda Explosion
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This hands-on activity lets participant explore chemical reactions as they create a soda explosion with lots of bubbles. The bubbles in soda are made of carbon dioxide gas.

What Goes Up...
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In this activity about gravity (page eight of the pdf), learners will very simply explore how gravity affects objects using balls and toys.