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We all Scream for Ice Cream
Source Institutions
In this activity, learners observe how salinity affects the freezing point of water by making and enjoying ice cream.
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Liquid Lens
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In this activity, learners discover that they can create a lens from a water drop. Learners test their lens by looking at words or pictures.
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Mystery Writing: Write and develop a secret message
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Learners write an invisible message using lemon juice on a piece of paper. They then develop the message by soaking the paper in a dilute iodine solution.
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Polishing Pennies
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In this experiment, learners try different liquids to see which ones clean pennies best. Liquids to try include water, lemon juice, cola, vinegar, and dishwashing detergent.
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Spinning Illusions
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In this activity, learners construct three optical illusion toys to examine how our brains play tricks on what we see.
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TerrAqua Investigation Column: What is the Land-Water Connection?
Source Institutions
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.
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Moo Glue
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Using a milk-based recipe, learners create "moo glue" which is basically white school-type glue. The "secret ingredient" in milk that helps make glue is a chemical called casein.
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Let's Make Molecules
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In this activity, learners use gumdrops and toothpicks to model the composition and molecular structure of three greenhouse gases: carbon dioxide (CO2), water vapor (H2O) and methane (CH4).
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Ice Cream
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In this chemistry activity, learners use the lowered freezing point of water to chill another mixture (ice cream) to the solid state.
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Floating Butterfly
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In this activity, learners create a cool floating animal using the science of magnetism. Learners discover what happens when a piece of magnetic metal enters a magnet's field.
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Wind Tunnel
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Scientists use enormous wind tunnels to test the design of planes, helicopters, even the Space Shuttle.
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Candy Chromatography
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Learners analyze candy-coated sweets using chromatography. Learners use this method to separate the various dyes used to make colored candy.
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Coupled Resonant Pendulums 2
Source Institutions
Create a simple dual pendulum and get them to swing in identical ways. This is a simple, low cost, activity produced by the Exploratorium.
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DIY Elephant Toothpaste
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In this activity, learners will experiment with catalysts to create an at-home version of elephant toothpaste.
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Buoyant Bubbles
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What keeps bubbles and other things, like airplanes, floating or flying in the air?
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Indicator Paper
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Use grape juice, baking soda, water and vinegar to make acid and base indicator paper! This activity contains a recipe and instructions for the indicator paper.
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Bake Ice Cream in Your Oven
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In this a hands-on activity, learners explore how to put ice cream in an oven without it melting. Ideas in this activity include insulation and cooking.
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It's the "Rain," Man
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In this weather forecasting activity, learners use common materials to construct a rain gauge and measure daily, monthly, and yearly rainfall.
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Chemistry is Colorful
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In this activity, learners explore materials through paper chromatography.
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Where Does the Wind Blow?
Source Institutions
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.