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

In this activity (on page 1), learners role play as atoms to explore how atoms can be rearranged to make different materials.