West
Middle School eighth-grade science classes have been studying igneous,
sedimentary and metamorphic rocks. To extend the curriculum the classes were
asked to use magnifying glasses and reference books to identify rock samples by
name and type. Students worked cooperatively in groups to fill out lab reports.
It
was interesting to witness critical discussions by group members in order to
identify the rock samples provided. Some students used prior knowledge to
either identify or eliminate particular choices. Such comments as, "We
have that in our kitchen,” (for granite) and "It can't be coal because
it's not blackening my hand,” (to eliminate coal and choose obsidian) were
overheard.
This
lab activity was a success. Students were able to accurately identify rocks as igneous,
sedimentary or metamorphic by using scientific tools and reference guides.
Most
importantly, students have a good understanding of what qualities make a
productive group member. Active learning occured during this successful rock
identification lab.
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