Page 27 - Demo

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HUMAN IMPACT ON THE EARTH, continued
Freshwater Pollution Testing Super Value Kit
The Freshwater Pollution Testing Kit lets students check water quality using safe, simple and effective tablet-type tests. Students perform chlorine, dissolved oxygen, nitrate, phosphate and pH tests. Includes detailed background on types of water pollution, sources and effects of each factor tested as well as color comparison charts, detailed insturctions, sample tubes and tablets for 5 classes of 30 students work- ing in pairs.
AP5954 I $192.70
Water Pollution Chart
This chart is full of informative text and colorful drawings that provide answers to common questions about water pollution. A large center map details 47 water pollutants and methods for managing them. A table lists physical and chemical data, detailed diagrams show the aquatic food chain and the nitrogen and mercury cycles, and a map shows the prevalence of water pollution in the United States. Printed on durable, heavy- weight paper. 28" × 221⁄2".
AP5216 I $10.60
Environmental Science Activities Kit Book
This collection of hands-on activities helps students understand and appreciate the environment. Includes 35 interdisciplinary lessons on key environmental issues, such as global warming, alternative energy sources, endangered animals, nuclear power and air pollution, with complete directions, repro- ducible worksheets, materials lists, discussion questions and preparation and safety consid- erations. Bibliography. 512 pages, 81⁄4" × 11", spiral-bound.
FB1020 I $40.05
The Greenhouse Effect, DVD
The Greenhouse Effect explores the causes and effects of global warming. Students discover how the burning of fossil fuels, deforestation and inefficient agricultural practices contribute to this environmental crisis. 17 minutes.
FB0022 I $41.15
Sampling Square
Students can now easily quantify the types of organisms in their classroom’s field study! This lightweight, portable sampling square is quick to set up and use. A durable bungee cord runs through the pipes of the sampling square to allow the square to literally pop together. Simply place the 0.25 m2 square on the location to be studied and count the number of organisms within that square. Available as an individual square or a class- room set of eight.
AP6833 I Individual I $27.85 AP6834 I Classroom Set I $193.10
Greenhouse Effect and Global Warming—Student Laboratory Kit
Students gain understanding of the green- house effect and global warming. Part one involves air temperature inside a “green- house bottle.” In part two, students pass carbon dioxide samples through indicator solutions and analyze how much base must be added to return it to its original color. Includes comprehensive Teacher Notes and student handouts. Complete for five student groups.
AP7324 I $67.75
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I HUMAN IMPACT ON THE EARTH 25