Students investigate acid rain. In this environmental lesson, students participate in an experiment using litmus paper and various liquids and then test the acidity of the liquids. Students identify reasons why acid is harmful to the...

Learners use litmus paper to begin to discover the qualities of acids and bases. They learn about pH by testing clear liquids for acidity with purple cabbage juice as an indicator. The video Streamkeeper, with Bill Nye, and other video...

For this pH instructional activity, learners describe acids and alkalis. They also determine whether substances are strongly acidic or alkaline. To determine the pH of given substances, learners use the color of universal indicator...

Students listen to story, The Lorax, by Dr. Seuss, discuss air quality and how people affect the earth and its atmospheric cycles, and give oral reports on what they have learned.

At this site you will find a step by step process for making a natural pH indicator. One of the main materials you need to have on hand is a red cabbage.