Materials Needed: Various Igneous Rock samples, Earth Science Reference Table (free on internet)
Suggested Materials: magnifying glasses, rulers for measuring crystal size
Pre-Lab: Students read a passage then complete a Venn Diagram comparing and contrasting intrusive and extrusive igneous rocks.
During-Lab: Students follow a series of questions to make observations of various igneous rock samples. Then they must use the Earth Science Reference Table to identify the rock names.