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In this online Flash game, learners will explore a coral reef using an underwater remotely operated vehicle (ROV).

In this activity (on page 7), learners explore the meaning of a "carbon sink." Using simple props, learners and/or an educator demonstrate how plants act as carbon sinks and how greenhouse gases cause

“Exploring Earth: Rising Sea” is a hands-on activity demonstrating ways to use topographical mapping techniques to track changes in sea level. The activity is connected to current NASA research.

In this lesson, learners will practice graphing and statistically analyzing data.

In this activity, learners investigate the food, water, and space needs of common livestock animals.