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This lab activity has learners create a pendulum with a one-second period.

Millions of organisms can live in and around a body of water.

This series of chemistry stations is designed to accompany the PBS documentary about African-American chemist "Percy Julian: Forgotten Genius." Each of the six stations features either a chemical or p

In this activity, learners determine the elastic and plastic properties of different types of metal wires.

In this activity, learners identify different classes of matter based on physical properties.