# Human-Environment Relations: International Perspectives from History, Science, Politics, and Ethics

## CONTENTS OF CURRICULUM UNIT 99.06.04

- Narrative
- What is Air?
- Ozone Layer
- Air Movement
- Federal Clean Air Act
- Air Quality
- Deregulation of the Power Industry
- Lesson 1 Making a Circle Graph of Air Components
- Lesson 2 Does Air Have Weight?
- Lesson 3 Developing a Neighborhood Map of Tri Companies
- Lesson 4 Measuring Dispersion
- Lesson 5 Graphing the Five Connecticut Power Plant's Emission
- Lesson 6 Land Development Group
- Bibliography

### Unit Guide

## Problem Solving Using Mathematics Spatially to Interpret Environmental Issues

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## LESSON 4 Measuring Dispersion

Materials: perfume, cologne, four student volunteers, stop watch and chart, blind fold.

Objective: The students will determine through an experiment the dispersion rate of certain solutions such as: perfume, cologne, ammonia, and alcohol.

Teach: To determine distance use the formula; distance (d) = rate(r) multiplied by time (t); d = rt. Using the classroom and students to determine the distance traveled and speed, for each solution. Does it matter if the room has ventilation concerning the experiment? How can the experiment be setup in the classroom? What is needed to solve the problem?

Place students in the corners of the room, with blind fold on. Mark the distance from spray to student. Time keeper write time of spray and records when each student smells the spray. Conduct experiment two more times once with the classroom closed, then open ( door and window), record student's time. Determine the answers to questions and any observation not mentioned.

Guided Practice: As a class complete the first experiment, set up the data chart

Room Distance Spray Smell Elapsed Travel

Student Condition from source Time Time Time distance/time

Independent Practice: using the data from the chart complete calculations. Peer correct with discussion. Must show calculations for distance traveled per unit of time formula for each trail in chart. Correct each other's work through proof theories

Closure: Write one paragraph concerning what you learned from this lesson.

Mathematics standard: interpret data, distance formula, and solving equations using variables.