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3 knowledge points that need to be paid attention to during the use of compound crusher

3 knowledge points that need to be paid attention to during the use of compound crusher

Jan 16, 2020 Sep 14, 2017 Have students work in small groups (3 or 4) to fill in a chart with 3 columns – what they know, what they think they know, and what they need to find out. This can be done on newsprint and reported out to the class. Use a discrepant event (often described in the sciences, but you creative folks outside the sciences will think of something).

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