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That Sinking Feeling
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In this quick activity, learners observe how salinity and temperature affect the density of water, to better understand the Great Ocean Conveyor.
Potato Straw
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In this physics demonstration, learners are challenged to insert a straw the furthest into a potato.
Rollin’ Rollin' Rollin'
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In this physics activity (page 12 of the PDF), learners explore potential and kinetic energy by rolling different sized marbles down an inclined plane.
Daffy Density
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In this chemistry activity, learners explore density by using four solids and 6 liquids to create colorful, layered rows.
Finding Red
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In this chemistry challenge, learners systematically investigate which combination of four solutions produces a deep red color.
Moving Without Wheels
In a class demonstration, learners observe a simple water cycle model to better understand its role in pollutant transport.
Silver Crystals
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This is written as a static display, but can easily become a hands-on experiment for learners.
Hot Stuff!: Carbon Dioxide Extinguishes a Flame
In this demonstration, learners observe vinegar and baking soda creating carbon dioxide (CO2) in a bottle. The gas is poured out of a bottle onto a candle flame, putting out the candle.
Slide Projector Activities
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This resource contains several mini-explorations using a slide projector as a light source to investigate light and the properties of images.
Trading Places
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In this activity, learners discover that atoms and ions of different metals will change places.
Why Are Two Eyes Better Than One?
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In this activity, learners explore how their depth perception would be affected if they only had one eye. Learners work in pairs and attempt to drop a penny in a cup with one eye covered.
Gene Switches
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In this activity, learners explore how genetic switches function and the role of genetic switches in the process of evolution.
Mind-Reading Magic
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In this activity, learners recreate a method of detecting and correcting errors in computers called 'parity'.
Bend That Bar
Learners play the role of materials engineers as they test the flexibility of different materials.
Inertia
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In this physics activity (page 8 of the PDF), learners will explore the concept of inertia by attempting to run and stop quickly.
Magic Sand: Nanosurfaces
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This is an activity/demo in which learners are exposed to the difference bewteen hydrophobic surfaces (water repelling) and hydrophilic surfaces (water loving).
Scale Model of Sun and Earth
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In this activity, learners explore the relative size of the Sun and Earth as well as the distance between them.
Storm Water Runoff Pollution
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This activity (located on page 8 of the PDF) introduces learners to the concept of Non-point Source Pollution--what happens when rain washes garbage and other pollutants into rivers and lakes.
Canned Heat
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In this activity, learners explore how light and dark colored objects absorb the Sun's radiations at different rates.
Liquid Layers
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Experiment with liquids of different densities and create liquid layers. For example, oil and water have different densities: oil floats on water because it is less dense than water.