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Environmental Science
Environmental Science—Pollution, continued
Becker Bottles “One in a Million”
By: Bob Becker, Kirkwood H.S., Kirkwood, MO
How big is a million? What does it mean for a
contaminant to be found in a concentration of one part per million? These amazing bottles make parts per million and molecular concen- tration concepts more concrete for your students and offer many wonderful teaching opportunities.
Becker Bottle “One in a Million”—This device is simple—a large 3-L bottle containing one million tiny colored spheres. When you chal- lenge students to find the one black sphere (1 ppm) among all the other colored spheres in the bottle, they will have difficulty finding it, and the concept of a million starts to become real. Other colored spheres (e.g., 10 ppm, 100 ppm) become increasingly easier to find in the million bottle.
Becker Bottle “One in a Million Too”—This new Becker Bottle “One in a Million Too” will make your original Becker Bottle even more dynamic. A lone black sphere mixed in with 999,999 all-yellow spheres make a vivid contrast to the 999,999 multicolored background spheres in the original Becker Bottle. Conduct a race to find the lone black sphere in each bottle. The same number of spheres are in each bottle, but what a difference in the race results! A whole new series of ques- tions arises about solvents and concentrations.
The Becker Bottle “One in a Million Too” (AP4854) is a must purchase to go with your original Becker Bottle (AP4559). If you do not have the original Becker Bottle, order the set of two (AP4863) and save!
See free video at flinnsci.com.
Plants and Pollution—
Student Laboratory Kit
Plants need moisture and other key ingredients to
grow vigorously and stay healthy. How do environmental pollutants (such as acid rain, fertilizers, street salt and detergents) affect the vigor and growth of plants? What are pollutants to plants? How concentrated do pollutants have to be to affect plants? Students will experiment with different types of chemicals on radish seeds and discover answers to these questions. Instructor’s Notes, reproducible student handouts, and all necessary chemicals and specialized equipment are provided.
Complete for 30 students working in pairs.
Stream Contamination—
Forensic Laboratory Kit
By: The Flinn Staff
A massive fish kill has occurred in the town of Raymond. The towns- people are in an uproar, and extensive efforts are underway to determine why the fish are dying. It is up to your students to take the role of forensic scientists and determine who is responsible. Students will use nitrate and phosphate tests to determine the culprit. Use this great problem-based learning activity to build student interest and let them see how science is used in everyday life. A variety of possible scenarios are presented, and the outcome may be changed from class to class. Includes extensive background information and all the testing materials needed to crack the case.
Complete for 30 students working in pairs.
1-800-452-1261
flinnsci.com
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Becker Bottles “One in a Million” AP4559, AP4854
Catalog No.
Description
Price/Each
AP4559
Becker Bottle “One in a Million”
$51.35
AP4854
Becker Bottle “One in a Million Too”
50.85
AP4863
Becker Bottles—Set of Two
94.85
Plants and Pollution—Student Laboratory Kit FB1615
Catalog No.
Description
Price/Each
FB1615
Plants and Pollution—Student Laboratory Kit
$52.95
Stream Contamination—Forensic Laboratory Kit AP6863
Catalog No.
Description
Price/Each
AP6863
Stream Contamination—Forensic Laboratory Kit
$64.25
ENVIRONMENTAL SCIENCE—POLLUTION continued on next page.