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1995. The Teacher Enhancement Program in Biology. The philosophy of this manual was to develop a small team consisting of scientists and teachers working together to create materials that are content-rich, scientifically accurate, and applicable to classroom settings. The first section of this guide begins with necessary background information for the teacher to feel comfortable with the concepts being taught. The middle section includes activities that can be used to teach students about chromosomes, mitosis and meiosis. The third section explains how sea urchins can be used in the classroom to demonstrate how these concepts are related to each other. Watching the process of fertilization and early cell division is a dynamic way to impress upon students the continuity of both cell and life cycles. 160 pages, wire coil, b&w illustrations.