Teacher resources and professional development across the curriculum
Teacher professional development and classroom resources across the curriculum
Learner Express: Modules for Teaching and Learning

Geoscientist, Chuck Blay, of Teok Investigations, and volcanologist Dave Sherrod, of the Hawaii Volcano Observatory, USGS, compare and contrast Hawaiian volcanoes to Mt. Saint Helens, explaining the difference between an "effusive" volcano and an "explosive" volcano. Run Time: 00:02:58
Grades 5-8 Standard D. Landforms are the result of a combination of constructive (sedimentation, volcanoes) and destructive forces (weathering and erosion).