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Peer reviewedSchamp, Homer – Science and Children, 1988
Uses a demonstration done by John Tyndall in 1856 to show that geological processes can produce striking changes, such as slate formation, by slow and incremental means. Explains how Tyndall's demonstration can be replicated in the classroom using paraffin or beeswax to produce the layering change similar to slate. (CW)
Descriptors: Demonstrations (Educational), Earth Science, Elementary School Science, Elementary Secondary Education
