Lists and describes several types of graphic organizers which fall under the "interaction" mold, including a human interaction outline and model.

There are ten levels of interactive phrasal verb matching games on this site, starting at the elementary level, and going to more advanced level words to help English language learners practice their skills.

Brush up on immigration history while taking a virtual tour of the immigration station at Ellis Island. Listen to immigrants tell the fascinating story of their journey.

Text, video, and photographs of Obama's life and career.

World map.

A cartoon image of a mouse standing next to a basket.

Many components of a portrait of George Washington have been removed. You need to uncover them with the red spy glass. As you find each piece you will learn how it plays an important roll in the value of the painting and why the artist...

An interactive Java applet from the University of Utah that allows users to investigate the effect of the coefficient of friction on the motion of a block sliding down an incline. Initial height of the block and the friction coefficient...

An interactive Java applet from the University of Utah that allows users to investigate the effect of the coefficient of friction on the motion of a block sliding down an incline. Initial height of the block and the friction coefficient...

The meaning and cause of refraction--as well as Snell's law of refraction--are discussed. Includes an interactive problem-solving form in which visitors relate angles of refraction to the incident angle and the indices of refraction.

This physics department site explains how prisms work and their purpose in the dispersion of light. Explains the angle of deviation and includes an interactive form in which visitors calculate the angle of deviation and receive immediate...

This physics department site explains how prisms work and their purpose in the dispersion of light. Explains the angle of deviation and includes an interactive form in which visitors calculate the angle of deviation and receive immediate...

This physics department site explains how prisms work and their purpose in the dispersion of light. Explains the angle of deviation and includes an interactive form in which visitors calculate the angle of deviation and receive immediate...

This visual calculus tutorial features a discussion of continuity with an interactive example.

Includes an interactive feature in which a visitor enters their weight on earth and has their weight on other planets computed and displayed.

Includes an interactive feature in which a visitor enters their weight on earth and has their weight on other planets computed and displayed.

Includes an interactive feature in which a visitor enters their weight on earth and has their weight on other planets computed and displayed.

Includes an interactive feature in which a visitor enters their weight on earth and has their weight on other planets computed and displayed.

Includes an interactive feature in which a visitor enters their weight on earth and has their weight on other planets computed and displayed.

An interactive Java applet game in which the reflection of light is compared to the path of a billiard ball. Users view images of a target ball and try to direct a cue ball in such a manner as to hit it.

An interactive Java applet which allows the user to investigate the path of light through a lens shape object. The shape of the object, the index of refraction of the material, and the location of the incident rays can be altered.

A page describing the concept of temperature and temperature scales. An interactive JavaScript form allows the visitor to investigate the relationship between the Kelvin, Celsius and Fahrenheit scales. Simply enter a value and allow the...

A 3-D VRML rendering of the Vostok spacecraft. Detailed and highly interactive.

A VRML rendering of the Voskhod 1 and 2 spacecraft. Requires plugin or software to run the files. Detailed and highly interactive.