RXS Set of Volcanic Rocks

Our set of 12 volcanic rocks includes 12 of the most important igneous rocks formed during volcanic eruptions on land and in the oceans.  CinderMount Saint Helens ashVesicular basaltQuartzBasaltAndesite DacitePumiceObsidianRhyolitePorphyritic andesiteWelded tuff Our set of volcanic rocks includes each of the rocks listed above plus a 20 X power mini microscope. The Volcanoes book includes pictures and specific information about each volcanic rock in the Chapter 5 activity. It is much easier for students to learn how to identify rocks when they pick up and study actual volcanic rocks. They can also look at them closely with their mini microscope instead of just looking at the pictures in their textbooks.  Click here to see the textbooks Myrna taught Earth Science in public schools for a number of years. She introduced the topic of each science lesson at the beginning of the class. The video lessons are similar to the introductions she did in her classrooms. Each introduction i