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Error analysis consumes much of the focus in introductory physics labs. Catastrophic cancellation is a spike in error that occurs when subtracting two measurements of roughly equal magnitude. Often termed loss of significance or subtractive…

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The Cognitive Rigor Matrix superposes two of the most common tools used in K-12 education: Bloom’s Revised Taxonomy and Depth of Knowledge. This matrix has been adopted by numerous state departments of education and national organizations to evaluate…
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