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Counting Books: Make Your Own!
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On the first night, I saw 5 stars in the desert. On the second night, I saw 10… What do you think I saw on the third night? Combine arts and crafts, literacy, and math by making a counting book.

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

Cloud Fun
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Learners complete a series of hands-on and investigative activities to explore cumulus clouds.

Habitat Observations
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In this outdoor activity, learners discover the wonders of the habitat surrounding them.

Jump to It!
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This is a quick and simple demonstration about reflexes (second activity on the page).

How to Test The Strength of Shapes
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In this activity, learners explore the strength of different shapes. Fold paper into triangles, squares, and other shapes, then experiment with how much weight they can hold.

Paperfolding Polyhedrons
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In this activity (on pages 55-66 of PDF), learners fold paper into origami shapes and then combine several identical shapes into a three-dimensional structure.

Tricky Tangrams
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In this activity (on pages 49-54 of PDF), learners play with tangrams, a set of triangles, squares and a parallelogram that can combine into a larger square as well as all sorts of other shapes.

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.
Rate It: Working With Zero and Negative Numbers
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In this activity, learners will rate the day, a book, or something else on a scale from -2 to 2. This activity works well for groups of all ages.

Horton Senses Something Small
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In this story time program, young learners listen to the Dr.
Math and Creativity Posters
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These math posters have questions written on them, such as: How many colors can you name in a minute? or How many seconds can you balance on one foot?

TerrAqua Investigation Column: What is the Land-Water Connection?
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In this investigation, learners plant seeds in a 2-liter bottle filled with soil that is connected to a water source below. Over the next few weeks, learners observe how the plants grow.

Decomposition Column
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In this activity, learners turn empty 2-liter bottles into a see-through compost container.

The Desert Blooms!
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This activity attempts to clear up the common misconception that deserts are always hot, totally dry, and uninhabitable.

Kimchee Fermentation Chamber
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Learners make kimchee or sauerkraut, which is really just fermented cabbage, in a 2-liter plastic bottle.

Hungry as a Caterpillar
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In this indoor and outdoor activity, learners discover that insects grow and develop as do all living things, going through a process known as complete metamorphosis.

From the Internet to Outer Space
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In this activity, learners will use Google Sky to observe features of the night sky and share their observations.