Clear language, embedded definitions, and interesting examples illustrate abstract concepts through both text and well-chosen photographs. The authors do not avoid difficult or controversial issues: Changing Life, for example, provides a clear and useful explanation of the theory of evolution, with multiple sources of evidence and a discussion of how it helps scientists to predict the implications of changes to the environment. Science Ethics discusses topics such as global warming and animal research, and their implications for decision-making by scientists, policy makers, and voters. Because so many issues are raised in this book, it will be especially useful as a research starter in both science and social-studies classes. In addition to describing relevant theories and the scientific explanations for observed phenomena, each book also discusses the impact of human activities on the issues discussed, whether the way humans impact ecosystems (Ecology) or how smoking and drinking affect sperm count and the unborn child (Human Reproduction). The main focus, however, is on the scientific concepts rather than applications–for instance, Human Reproduction does not discuss contraception except to note the statistic that "sexually active teenage girls who do not use contraceptives (birth control) have a 90 percent chance of becoming pregnant within a year." Each book also includes suggested activities to test ideas as well as a thorough glossary and a Webliography.–Judith V. Lechner, Auburn University, AL
School Library JournalSeptember 2009
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Describing topics that are both timely and interesting to middle school students, the Sci-Hi series explores science with accessible text and engaging pictures. The authors break complex content it into short chunks that students can read and think about. These sections provide background information on the subject, show flow charts to explain concepts, and introduce key vocabulary. In students' hands, these books provide a great place to start research on a topic or can just be interesting reads.
Each book in the series has the essential elements of good informational text. The tables of contents draw students in by framing questions in bubbles; students can then find the answers in the text. Key words are presented in bold type and are defined in the glossaries. Interesting facts are featured in sidebar notes, and students are guided to new information as they read. The images in the books are both current and global in their content. The use of varied text elements, such as diagrams, graphs, and charts are a real plus, presenting information in a variety of ways. The books also contain bibliographies of current books and websites that students can explore if they want more information on the subject.
The human body is "the most complicated and powerful object we use every day." It needs to be properly cared for and maintained, and this book is somewhat of a guide to help students in this important daily challenge. Tracing the development of the body from conception through birth, infancy, childhood, adolescence, and adulthood, the authors help students learn about the milestones they have experienced or will experience.
A section on diet and nutrition explains how the body uses nutrients, stresses the importance of a balanced diet, and discusses diet challenges that face teens. The value of proper exercise, both aerobic and anaerobic, and the dangers of steroid drugs are stressed. Preventive health practices such as cleanliness, oral hygiene, and proper eye care are emphasized, and the serious effects of using tobacco, alcohol, and drugs, including prescription drugs, are presented in a factual, no-nonsense fashion. The book concludes with a brief discussion of emotional health. —Richard Lord
NSTA9/23/2009
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