Math World explains the Golden Ratio, gives the formula for finding the irrational number, and expresses this value as an infinite series. Also defines and represents the Ratio geometrically, its relationship to the Fibonacci numbers,...

Trinity University offers an overview of the problems of inequality in the education system in the United States. Has links to charts and articles about income and education.

A comprehensive site offering a detailed description of the excavation of Caral in Supe Valley, Peru. Links from this site offer downloadable pictures, maps, and diagrams of the pyramid. A short video of a researcher explaining the...

The KKK membership was on the rise in Detroit in the 20s. An angry mob gathers at the home of an African-American doctor and shots ring out from the upstairs. Investigate the trial through transcripts and eye witness accounts.

PBS had a series called "History Detectives." The video is no longer available for this episode, but this transcript of the video is. Read about the Black Star Line, envisioned by Marcus Garvey as a shipping company in which African...

This resource offers the complete texts of four of Andersen's best-known fairy tales: The Emperor's New Clothes," "The Ugly Duckling," "Thumbelina," and "The Swineherd." The texts can be read online or downloaded in MP3 format. In...

Based off of the hit television show NUMB3RS, this lesson introduces students to one of the prominent algorithms in graph theory used to find shortest paths -- the Djikstra Algorithm. The lesson includes four graphs of increasing...

Read the history of Marie Curie and her work with radium. Use the tabs above to read more about this scientist, her research, and her rewards.

In this biology science fair project, test various amounts of glucose to see which ones attract and which repel (chemotaxis) growing Physarum polycephalum slime mold.

This science fair project for Science Buddies lets you be the rocket scientist. See how the rocket design changes its performance. The Science Buddies project ideas are set up consistently beginning with an abstract, objective, and...

Airplane wings do not all have the same design. With this Science Buddies project you can design your own wings to see which offers the greatest lift. The Science Buddies project ideas are set up consistently beginning with an abstract,...

In this project, you'll learn how to isolate DNA from onion cells, separating it from other cellular components in a manner that still preserves its structure and sequence. In the end, you'll have enough DNA to see with the unaided eye,...

There's nothing quite like the smell of fresh-baked bread to make your mouth water. As any baker can tell you, you can't bake bread without yeast. This project makes clever use of bread dough to measure yeast reproduction three different...

Everybody knows that worms are good for the soil, but not everybody knows why. Here's a project that investigates just one of the ways earthworms improve the earth.

Cryopreservation-storing seeds in ultra-cold liquid nitrogen-is one method for maintaining plant genetic stocks in seed banks. The purpose of this project is to observe the characteristics and outcomes of cryogenically frozen seedlings...

Plants have evolved many clever mechanisms to ensure that their seeds will wait for appropriate conditions before sprouting. Some may only germinate after a fire, others only after going through a cold spell. This project explores one...

There's an old saying that "the clothes make the man" (or woman, we're quick to add nowadays). How true do you think this is? Here's a project with one approach for finding out.

Here's a good way to get yourself on TV. This science fair project will help you learn how to predict the weather. So who knows, maybe you'll be more accurate than your local meteorologist.

Many sports use a ball in some way or another. We throw them, dribble them, hit them, kick them, and they always bounce back. What makes a ball so bouncy? In this experiment you can investigate the effect of air pressure on ball bouncing.

Imagine that a biologist arrived at your big family reunion and had no idea who were sisters, cousins, aunts, uncles, etc., but tried to sort it out by how all of you look. Just based on how you look, would s/he be able to guess whether...

The DNA in our cells contains our "blueprints," but it's the proteins in our cells that do most of the work. The Human Genome Project has allowed us to start reading the blueprints, but we still don't understand what most of the proteins...

You're playing Monopoly with a friend, and you've already got Park Place and you really, really want to get Boardwalk. If you're on Pacific Avenue, what are the chances you'll reach your goal? Here's an easy project that will show you...

What does it take to launch a satellite to explore Mars, or a mission to the moon? This project has several possible variations for exploring the physics of rockets. This is rocket science.

This project shows how mathematical probability sometimes contradicts our intuition. Despite the fact that there are 365 days in a year, if you survey a random group of just 23 people there is a 50:50 chance that two of them will have...