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GEM Subject is
Science -- Instructional issues
781 - 785
Glaciers are found on every continent except Australia. This interactive feature provides an introduction to these moving streams of ice, which cover about 10 percent of Earth's land surface and hold between two and...
Global Trends Quiz
All of Earth's living things depend on healthy, life-sustaining ecosystems for their survival. But continued human population growth, combined with the planet's limited supply of natural resources, might generate...
Topographic Maps III: Back Azimuths and Triangulation
In this activity, students will learn the more advanced mapping skills of calculating back azimuths and triangulation. Using a local 7.5-minute series map, the teacher will select a starting point and an obstacle, have...
Topographic Maps I
In this activity, students will become familiar with topographic maps and their uses, as well as developing an awareness of their local surroundings in terms of geographic and geological features. The activity is...
Toxic Gold Rush
This radio broadcast outlines the recent upsurge in gold mining, particularly small-scale operations, and the resulting problem of mercury pollution. A brief introduction to the use of mercury to separate gold is...
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