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Making Rivers
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In this outdoor water activity, learners explore how to change the direction of water flow. Learners make puddles in dirt or use existing puddles and sticks to make water flow.

Bike Bling
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In this activity, learners will trick out their bike with crafts and flair. Learners will explore symmetry, cause and effect and design through this activity.

Seed Orbs
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In this activity, learners will make seed orbs to grow new trees and plants. Learners will explore ecology and life cycles as well as stewardship through this activity.

Using a Simple Astrolabe
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In this activity, learners use an astrolabe to measure the altitude of objects. Learners will first practice taking measurements by measuring the altitude of trees and buildings.

Finding the Size of the Sun and Moon
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In this activity, learners build a simple pinhole viewer. They use this apparatus to project images from a variety of light sources, including a candle, the Sun, and the Moon.

Can Energy be Created or Destroyed?
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In this activity, learners explore conservation of energy by experimenting with a solar cell light device.

Personal Pinhole Theater
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Have you ever heard of a camera without a lens? In this activity, learners create a pinhole camera out of simple materials. They'll see the world in a whole new way: upside down and backwards!

Portable Sundial
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Learners construct one or more of the following kinds of sundials: a shadow plot, a horizontal sundial, and a diptych sundial.

Polarized Sunglasses
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In this activity, learners explore how polarizing sunglasses can help diminish road glare.

Soda Geyser
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In this quick activity (page 1 of PDF under SciGirls Activity: Lift Off), learners will use the ever-popular soda geyser experiment to test the reactivity of the various sugar candies or mints.

Weather Forecasting
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This activity (on page 2 of the PDF under SciGirls Activity: Forecasting) is a full inquiry investigation into meteorology and forecasting.

Building Tetrahedral Kites
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Working in teams of four, learners build tetrahedral kites following specific instructions and using specific materials.

Sled Kite
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In this activity, learners build a sled kite that models a type of airfoil called a parawing.

A Degrading Experience
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In this activity on page 27, learners perform an experiment to learn about how different types of marine debris degrade and how weather and sunlight affect the rate of degradation.

Composite Materials
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This is an activity (located on page 3 of PDF under Hockey Sticks Activity) about composites, materials made of 2 or more different components.