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In this outdoor activity and bingo-like game, learners explore why and how seeds spread far from the plants that produce them.

In this activity (on pages 18-29) learners explore the impact of the March 24, 1989 oil spill in Alaska caused by the Exxon Valdez tanker.

In this activity, learners are challenged to design a planktonic organism that will neither float like a cork nor sink like a stone.

In this activity about humans and space travel (page 1 of PDF), learners compare and contrast the behavior of a water-filled plastic bag, both outside and inside of a container of water.

In this activity, learners identify different plastics in a mystery bag. Learners discover that plastics are classified #1 through #7.