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Science -- Instructional issues
781 - 785
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...
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...
Earthwatch Radio: Sea Lamprey Resurgence
This radio broadcast describes efforts to control the population of sea lampreys in the Great Lakes. Sea lampreys, an invasive species from the Atlantic Ocean, have populated the lakes for years, but have recently...
A Helpful But Hazardous Harvest
Scientists clean up chemicals like polychlorinated biphenyls (PCBs) with help from vegetables like pumpkins and zucchini. This radio broadcast explains how certain vegetables can be grown to absorb pesticides and...
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