Continental margins are an important part of the ocean floor. They separate the land above sea level from the deep ocean basins below and occupy about 11% of Earth's surface. They are also economically important, as they harbor both mineral resources and some of the most valuable fisheries in the world. In this article students investigate North…

This report summarizes the characteristics of physics education in 12 countries: Argentina; Brazil; Canada; Chile; Colombia; Costa Rica; Ecuador; Guatemala; Jamaica; Mexico; the United States; and Venezuela. An introductory chapter describes the goals of the Council on Inter-American Conferences on Physics Education, historical background,…

Knapping is a toolmaking technique used by early humans and replicated by research archaeologists. Describes knapping techniques and provides examples of how they are presently being used in North America. (MDH)