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Topics/Subjects:
Physical sciences  
Materials Cost:
$1 - $5  
Learning Time:
2 to 4 hours  
Instructional Strategies:
Cooperative learning  
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Students are introduced to classification through progressive activities. Initially, the teacher models the task by classifying buttons. Students then devise a classification scheme for paper clips. Subsequent activities use objects brought from... (View More)

Keywords: Classification

This is a lesson about impact craters; the relationships between crater size, projectile size and projectile velocity; and the transfer of energy in the cratering process. Learners will create plaster of Paris or layered dry impact craters and... (View More)

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