expectatins be applied across our diverse society? These and other fundamental issues are addressed in National Science Education Standars - a landmark development effort that reflects the contributions of thousands of teachers, scientists, science educators, and other experts across the country. The National Science Education Standars offer a coherent vision of what it means to be scientifically literate, describing what all students-regardless of background or circumstance-should understand and be able to dat at different grade levels in various science categories. The book describes the exemplary teaching practices that provide students with experiences that enable them to achieve scientifc literacy, critera for assessing and analyzing students' attainments in science, and the larning opportunities that school science programs afford. In

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