Watch budding chemists interact with the resource on chemical interactions. In the unit, six lessons provide an overview of basic chemistry, from understanding the development of atomic theory to distinguishing between ionic and covalent...

How do you affirm and negate a statement of value? What is refutation? Interested in debate? Introduce your class to the format of the Lincoln Douglas debate with 14 lessons, designed to be used in order, so that debaters learn the logic...

PBS Online NewsHour provides lesson plans to help students become informed about the 2008 presidential election.

Features a collection of over fifty lesson plans relating to different aspects of the election process arranged according to currentness.