NSES Content Standard A
Science as Inquiry: Understanding about scientific inquiry Grades 5-8, page 148 Scientific explanations emphasize evidence, have logically consistent
arguments, and use scientific principles, models, and theories. The scientific
community accepts and uses such explanations until displaced by better
scientific ones. When such displacement occurs, science advances.
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Benchmark 1B The Nature of Science: Scientific
Inquiry
Grades 6-8, page 12
Scientists differ greatly in what phenomena they study and how they
go about their work. Although there is no fixed set of steps that all scientists
follow, scientific investigations usually involve the collection of relevant
evidence, the use of logical reasoning, and the application of imagination
in devising hypotheses and explanations to make sense of the collected
evidence.