Mallison, George, Mallison, Jacqueline B., Froschauer, Linda, Harris, James A., Lewis, Melanie C., Valentino, Catherine. SCIENCE HORIZONS—SILVER BURDETT GINN—MORRISTOWN, NJ—1993. This is the basic text to be used a quide for sixth grade science.
Tilling, Robert I.—VOLCANOES—U. S. DEPARTMENT OF THE INTERIOR/U. S. GEOLOGICAL SURVEY. Excellent resource on the nature of volcanoes. Explains the principal types of volcanoes and locations.
Shedlock, Kaye M. and Pakiser, Louis C. U.S. DEPARTMENT OF THE INTERIOR/U.S. GEOLOGICAL SURVEY. Good source to be used in conjunction with earthquake information on the internet. Sections include History, occurrence, cause, measuring and predicting.
Harkness, Jon L. and Helgren, David M. RESOURCES—SCIENCE, TECHNOLOGY & SOCIETY. Globe Book Company—Englewood Cliffs, New Jersey—1993. Uses a problem solving approach to deal with problems with water, air and land resources that impact landforms.
Harkness, Jon L. and Helgren, David M. IMPACTS OF TECHNOLOGY—SCIENCE, TECHNOLOGY & SOCIETY. Globe Book Company—Englewood Cliffs, New Jersey—1993. Uses a problem solving approach with the issues of energy, hazardous substances, space exploration with technology.