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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 related to climate change, learners create and explore topographical maps as a means of studying sea level rise.

In this activity, learners use a model for how fishing affects marine life populations, and will construct explanations for one of the reasons why fish populations are declining.

In this activity, learners are introduced to tree rings by examining a cross section of a tree, also known as a “tree cookie.” They discover how tree age can be determined by studying the rings and ho

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