Curated OER
What is a Karst
Students investigate landforms by holding a class experiment. In this topography lesson, students define the word "karst" and discover why sinkholes are created on the surface of the Earth by completing worksheets. Students create a...
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Lunar and Planetary Institute: Explore! Discover Earth
A variety of hands-on activities, investigations, and explorations designed to engage learners in discovering planet Earth.