Activity 7 (Elaborate): How Much is a PPM?
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In this optional activity, students learn about the concept of parts-per-million (ppm) in order to understand how small amounts of pollution can have a large effect on the environment. They do this by returning to their Pollution in a Jar activity and using mathematical reasoning skills.
Activity Objectives & Materials
Approximate Time: 30-45 minutes
Students will develop an intuitive and mathematical sense of the unit parts-per-million
Students will understand that very small amounts of pollution can have a big effect on the atmosphere
Atmosphere in a Jar (from previous activity)
How Much is a PPM?
1. Frame the Activity
2. Pollution in a Jar
3. Understanding Parts-Per-Million
4. Animated Parts-Per-Million (optional)
5. Return to Pollution in a Jar
6. Making Sense of the Fractions
7. Finding Equivalent Ratios/Fractions
8. Reflection: Such a Small Amount
9. Formative Assessment