Informative and well organized, this book was produced in an effort to educate average citizens of the effects of improperly discarding plastics in marine environments. The book is divided into small sections with clear headings, making it ideal for researching background information to use in a lecture or to help develop classroom activities. It could also be used for a nonfiction reading exercise for students. The back of the book includes contact information for various agencies related to protecting marine environments. (1994, Center for Marine Conservation, Inc.)

This unit combines scientific inquiry and critical thinking skills as students learn about acid and the pH scale, make "fake lakes" and determine how the pH changes after an acid rainstorm, present a play focusing on effects of acid rain on aquatic life, conduct a plant growth experiment to determine the effect of various dilutions of acid on seed germination, and hold a town meeting to discuss solutions to the problem of acid rain. (1990, Great Expectations in Math and Science, GEMS)

This 184-page book contains a variety of activities and interesting information to help children and their families learn what they can do to help protect earth's environment. Each page contains a different activity with easy-to-follow directions and fun illustrations. (1990, The Learning Works, Inc.)

The students explore this controversial topic by building a greenhouse model of the atmosphere, playing a greenhouse simulation game, and comparing the amounts of carbon dioxide in car exhaust, human breath, air, and the gas created by the reaction of baking soda with vinegar. Students also analyze articles written from varying viewpoints, discuss a story about a youngster’s life on an island threatened by rising sea levels, and make "effects wheels" to outline possible consequences of a five-degree rise in world temperature. The unit concludes with students representing different international interest groups at a World Conference on Global Warming to debate issues and discuss solutions. (1990, Great Expectations in Math and Science, GEMS)