Cleverly animated sorting game introduces young learners to the mathematical concepts of comparing, sorting, and grouping. [All instructions and prompts are voiced, not written, making this an excellent resource for English language...

Students make their own ramps and test them out by sending various objects down them.

Young players will enjoy this cleverly animated color-mixing game that guides them through the process of mixing and matching colors. [All instructions and prompts are voiced, not written, making this an excellent resource for English...

Cleverly animated game that alerts young learners to the musical sounds all around them in their everyday environments. A useful exercise in helping children understand sound patterns and repetitive beats and the meaning of start and...

Hide-and-seek game instructs players to find Quack, a purple duck, in a series of different landscapes. [All instructions and prompts are voiced, not written, making this an excellent resource for English language learners who need...

Players click buttons to tell how many fish they see: 1, 2, or 3. [All instructions and prompts are voiced, not written, making this an excellent resource for English language learners who need practice in listening to and understanding...

The text of a speech given by abolitionist Angelina Grimke Weld on May 17, 1838.

This graphic from Evolution, traces the evolution of whales from land-dwelling mammals to the aquatic creatures we know today. A PDF is included that diagrams the evolutionary process that is believed to have taken place.

In this illustrated essay from NOVA Online, explore the cyclical process of weather creation and the effects of El Nino on the global weather system.

This interactive activity from A Science Odyssey tracks the journey of a sound wave from the moment a musician sings into a microphone until his voice reaches the vibrating speakers of an AM Radio.

In this interactive activity from the NOVA Web site, animations explain different aspects of the properties of metal.

In this interactive activity from NOVA Online, learn about a type of exploding star - a Type Ia supernova - that is so bright that astronomers can measure the distance to the galaxy in which it resides, and even learn which elements make...

This interactive activity from the NOVA Web site samples Galileo's experiments with falling objects, projectiles, inclined planes, and pendulums.

This Evolution Web feature explores how evidence can support a variety of hypotheses surrounding the mystery behind the extinction of the dinosaurs.

Examine this graph from FRONTLINE/NOVA: "What's Up with the Weather?" Web site to see dramatic increases in three greenhouse gases over the last two hundred years.

At the online companion Web site of "Evolution," the seven-episode series on PBS, delve into the private thoughts of a reluctant revolutionary--Charles Darwin.

In this letter written to his friend and mentor Charles Lyell less than three weeks after the publication of "On the Origin of Species", Darwin describes the reaction of the great anatomist Richard Owen to his theory. From Charles...

John Noble Wilford, a "New York Times" science writer, outlines various hypotheses on the origin of bipedalism.

You're the geneticist now. In this interactive feature developed for the companion Web site for NOVA/FRONTLINE: "Harvest of Fear," use the latest in genetic technology to engineer your own "supercrop" of tomatoes.

Find out how DNA profilers analyze bits of tissue to identify human remains. From the NOVA: "Lost on Everest" Web site.

This list from NOVA: "Cracking the Code of Life" Web site provides some of the basic, yet impressive, facts and figures about the Human Genome Project.

Browse through a table full of genetically modified (GM) foods to see what's available now and what's to come. From FRONTLINE/NOVA: "Harvest of Fear."

This interactive feature from the NOVA: "Everest" Web site lets you take the same brain quizzes that researchers have used to test the brain function of climbers on Mount Everest.

This document from NOVA: "Into the Abyss" describes the physical and behavioral traits of some of the least-known and most unlikely creatures on Earth.