Bring a historic chemistry experiment to life in your classroom! Introduce pupils to Thompson's ground-breaking discovery of the electron through a cathode ray simulation. The resource allows users to study the behavior of both electrons...

Why do the bases in DNA pair up the way they do? Unravel the mystery of the double helix in a virtual lab. Young scientists follow in the footsteps of Watson and Crick to determine the free energy associated with DNA base pair binding....

Not everything revolves around the sun! Believe it or not, there are planets, called exoplanets, that orbit stars other than our sun. Learners use an interactive online resource to research several of these planets. They learn about the...

A study of the periodic table of elements doesn't have to be elementary! Deepen understanding of the building blocks of chemistry with an interactive periodic table. At first sight, the table looks like a standard reference page, but a...

Sometimes science is puzzling. Using an online animation, individuals manipulate skeletal bones of an ancient species to recreate its skeleton. Learners complete the skeletal puzzle and learn about the process of paleontology in person...

Why do some things float and others sink? A creative simulation allows learners to adjust mass and volume of an object to affect its buoyancy in water. A graph records the effect of each manipulation.

For years, scientists believed tRNA was junk left over from larger RNA. Three scientists used different approaches to prove tRNA actually exists as the connection between DNA and protein. Learn about their experiments, their lives, and...

Take a trip on a fossil hunt. Pupils read about a trip to the Gobi Desert by a group of paleontologists to find fossils. Learners view pictures taken on the trip and determine what the scientists go through in the search for answers to...

In this online interactive philosophy learning exercise, students respond to 10 short answer and essay questions about Galileo's contributions to science. 

This site offers a wealth of online textbook-related materials that encourage the discovery of science in the world around us. Enter the site to access material on specific topics. Each section contains reading material (complete with...