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In this easy chemistry activity, learners submerge pennies in different liquids (water, lemon juice, vinegar, liquid hand soap, salt water, and baking soda mixed with water) to observe which best clea

In this activity, learners cut out a fish and then "paint" it using universal indicator and acids and bases.

Ocean acidification is a problem that humans will have to deal with as we release more and more carbon dioxide into the atmosphere.

DNA is the thread of life. Encoded in its genetic sequence is the information that makes each of us unique. This activity allows you to see long, stringy strands of DNA extracted from wheat germ.

In this chemistry challenge, learners work to figure out which of four juices are real, and which is just food coloring and sugar.

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.

In this activity, learners write invisible messages on goldenrod paper, and make the message appear and disappear using acids and bases.

The Sacred Cenote at Chichén Itzá is a sink hole, or well, containing groundwater. In this activity, learners create their own cenote using chalk, limestone, acids, and rain water.