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Direct linkLee, Eun Ju; Cite, Suleyman; Hanuscin, Deborah – Science and Children, 2014
Many teachers have developed "tried and true" lessons that they look forward to teaching-- mystery powders is one that these authors like. Originally part of the Elementary Science Study curricula in the 1960s, there are now many different versions of this well-known activity in which students examine physical and chemical properties of…
Descriptors: Science Instruction, Teaching Methods, Persuasive Discourse, Elementary School Science
