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What's the Angle?
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This activity helps learners understand how the angle of the Sun affects temperatures around the globe.
Catch a Wave: How Waves are Formed
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In this three-part activity, learners explore how waves are formed and why some waves are bigger than others. First, learners observe waves of water in a pan generated by an electric fan.
Urine the Know
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In this activity on page 5 of the PDF, learners compare water with artificial urine to see how urinalysis works. Learners use urinalysis test strips to test for glucose and protein in the fake urine.
Yogurt Cup Speakers
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Learners build a simple electromagnet, then use this electromagnet to transform a yogurt container into a working speaker. They can connect their speaker to a radio and listen as it transmits sound.
Soda Can Mirrors
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In this activity, learners explore how pictures change in curved mirrors. Learners make cylindrical mirrors by wrapping Mylar around soda cans.
Make Your Own Telescope
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Discover how a refracting telescope works by making one from scratch using common items. This telescope won't have a tube so the learner can see how an image is formed inside the telescope.
Liquid Crystal Thermometers
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In this activity, learners explore liquid crystal thermometers to observe how heat flows by conduction, convection, radiation, and evaporation.
How to Make an Audio Tape Bow
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From this How To slide show, you create an Audio Tape Bow that can play distorted audio sounds by running it across a tape head.
Exploring the Nanoworld with LEGO Bricks: Structure-Property Relationships at the Nanoscale
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In this activity (pages 32-41), learners learn how the atomic and molecular arrangement of matter are related to physical properties.
Headphone Helper
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In this design challenge activity, learners add headphones to a previously built instrument (see "Build a Band" activity) to make it easier to hear.
Terrestrial Hi-Lo Hunt
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In this outdoor activity, learners search for the warmest and coolest, windiest and calmest, wettest and driest, and brightest and darkest spots in an area.
Invisible Ink
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In this simple chemistry activity (page 1 of PDF under SciGirls Activity: Colorblind Dogs) about acids and bases, learners will mix a baking soda and water solution and use it to paint a message on a
Multiple Reflections
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In this activity, learners explore how mirrors reflect light and change the way we see things.
Underwater Hide and Seek
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In this activity, learners experience firsthand how marine animals' adaptive coloration camouflages them from prey.
The Colors of Flowers
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In this activity, learners perform an experiment to find out what determines a flower's color.
The Thousand-Yard Model
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This is a classic exercise for visualizing the scale of the Solar System.
Make Pan Pipes
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This is a simple activity for learners to create a traditional musical instrument. Pan Pipes have developed all over the world in different cultures, from South America to Greece and China.
Exploring the Nanoworld with LEGO Bricks: Structures and Their Construction at the Nanoscale
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In this activity (pages 42-49), learners discover the methods and challenges of building nanoscale structures with macroscale equipment.
Seasons and Shadows: Investigate How Shadows Shift Throughout the Year
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In this activity you'll see how the sun's tilt on its axis changes the length of shadows. For example, why is your shadow longer in winter than in summer?
Special Effects: Titanic and Beyond
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In this activity, learners investigate how geometry plays a role in perspective.