The words noise, nausea, and naval all stem from the same Latin root. Jessica Oreck divulges how their spellings and meanings diverged from the original naus. [2:02]

Interactive two-day lesson plan that engages young scholars in consideration of divergent policy alternatives concerning how the situation in Iraq should be handled, who should be in charge, and what the goals should be.

Interactive lesson places students in the role of decision-makers as they explore divergent policy alternatives concerning how the post-war period in Iraq should be handled, who should be in charge, and what the goals should be.

In this two-part lesson, students explore four divergent policy options on the question of how should the United States respond to terrorism.

[Free Registration/Login may be required to access all resource tools.] Volcanoes most often occur at plate boundaries.

[Free Registration/Login may be required to access all resource tools.] Volcanoes most often occur at plate boundaries.

[Free Registration/Login may be required to access all resource tools.] Earth's tectonic plates and how they move.

Illustrated diagrams in this tutorial help students understand the properties and functions of lenses.

Students take an in-depth look at the physics behind image formation.

[Free Registration/Login may be required to access all resource tools.] How mountains are formed as a result of plate tectonic processes.

What exactly is a "questioning tool kit"? This resource provides techniques for asking essential questions, hypothetical questions, telling questions, planning questions and organizing questions.

This lesson discusses the limit of a sequence in mathematics. Compares convergent and divergent sequences and presents numerical and graphical examples.

This lesson discusses the limit of a sequence in mathematics. Compares convergent and divergent sequences and presents numerical and graphical examples.

This lesson discusses the limit of a sequence in mathematics. Compares convergent and divergent sequences and presents numerical and graphical examples.

This lesson discusses the limit of a sequence in mathematics. Compares convergent and divergent sequences and presents numerical and graphical examples.

This lesson discusses the limit of a sequence in mathematics. Compares convergent and divergent sequences and presents numerical and graphical examples.