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Middle and High School Science Textbooks
A Standards-Based Evaluation


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Does the material include accurate and comprehensible representations of the key ideas?


Indicators of meeting the criterion

  1. Representation is accurate (or, if not accurate, then students are asked to critique the representation).
  2. Representation is likely to be comprehensible to students.
  3. Representation is explicitly linked to the real thing.

Rating Scheme
Excellent: The material includes a sufficient number and variety of representations that meet indicators 1–3 and none of the representations included in the material are inaccurate. (In order to judge whether there is a sufficient number and variety of representations, reviewers should first consider which key ideas require representations and then decide whether these are adequately represented. However, reviewers are not expected to evaluate and rate each idea separately and average the scores.)
Satisfactory: The material includes some representations that meet indicators 1–3 and few (if any) of the representations included in the material are inaccurate. (In some cases, including one accurate and comprehensible representation for a specific idea may be sufficient for a material to receive a "satisfactory" rating. However, most of the key ideas must be adequately represented.)
Poor: Even though the material includes a few representations that meet indicators 1–3, few or none of the key ideas are adequately represented.

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