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In this water pollution activity, learners create pond water cultures and investigate the effects of adding chemicals or natural nutrients.

In this water activity, learners test which objects float and which sink. Learners discover that objects behave differently in water.

In this nanoscience activity, learners discover that it's easy to pour water out of a regular-sized cup, but not out of a miniature cup.

In this water activity, learners build boats that float and sink. First, learners listen to the book, "Who Sank the Boat" and practice making predictions throughout the story.