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Currently Working: Testing Conductivity
Source Institutions
Visitors test solutions of water, sugar, salt, and hydrochloric acid and the solids salt and sugar. They clip leads from the hand generator to wires immersed in each substance.
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First Impressions
Source Institutions
Learners experiment with a commercial photo-sensitive paper (Sunprint® or NaturePrint® paper). They place opaque and clear objects on the paper and expose it to bright light, observing the results.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-875.jpg?itok=yHhyLgi_)
Starting Your Container Garden
Source Institutions
This guide outlines how to plant a garden even if you don't have a yard!
Egg Osmosis
Source Institutions
Visitors observe three beakers. One beaker contains an egg immersed in vinegar. Visitors observe carbon dioxide gas escaping from the shell as the calcium carbonate reacts with the vinegar.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-479.jpg?itok=dcij08Fa)
Make Your Own DNA
Source Institutions
Learners match puzzle pieces to outlines of a DNA strand. The puzzle pieces represent the four chemicals making up DNA base pairs: adenine, thymine, guanine, and cytosine.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-484.gif?itok=66toe9yF)
Crocodiles
Source Institutions
Learners observe and compare the sizes of three toy “growing” crocodiles made from water-absorbent polymers. One is it its original state, dry, hard, and about 10cm long.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-004.png?itok=qMj6A29m)
Starch Slime
Source Institutions
Learners mix liquid water with solid cornstarch. They investigate the slime produced, which has properties of both a solid and a liquid.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-830.jpg?itok=t_8xLZWT)
Forwards and Backwards
Source Institutions
In this activity, learners explore acids and bases by preparing six solutions that combine vinegar and ammonia, ranging from acid (all vinegar) to base (all ammonia).