From polyhedrons to platonic solids, here is a lesson that will have your classes talking! As an introduction to platonic solids, scholars cut and fold nets to create the three-dimensional solids. They use an interactive component to...

Explore vocabulary related to three-dimensional shapes. An instructional website describes the characteristics of different geometric solids. Learners can use an interactive component to view nets, faces, vertices, and edges of common...

Square dancing has been part of American culture since the colonial settlers blended their varied traditions together. Contains historic photos, and an audio track of "Gents Go Center." Requires RealPlayer.

The official site for the Madison Square Gardens, the world's most famous arena!

This CoolMath resource will help students solve quadratic equations with a square roots trick instead of through factoring.

Thoughts of Wang Dan, primary dissident in the Tiananmen Square protests, on China during the time of the protests and China in current times. June 2, 2009

Tiananmen Square is a modern creation, China being a land where large public gathering places were not traditionally built. See a video of the people gathered together at the end of the day to watch the Chinese flag come down. Read the...

An Electronic Briefing Book on the Tiananmen Square protests that is divided into five sections: Student Demonstrations in 1985-86, On the Brink, The Crackdown, The Aftermath, and Ten Years after Tiananmen. Site includes a collection of...

The math concept of "Magic Squares" is explored here with basic terminology and examples to begin with. Once students have mastered these, the more challenging idea of how to multiply magic squares is introduced. Review materials are...

The CyberSquad builds a raft out of squares in order to cross a river in this Cyberchase video [2:05] segment.

View examples on completing the square and deriving the quadratic formula. The key to solving by completing the square is "practice, practice, practice". By so doing, the process will become more "automatic", and you'll be much more...

A description of the Haymarket Square riot and its cause. Find quotes from the Chicago Tribune which called the protesters insurrectionists, and two Illinois governors who doubted the guilt of those rounded up, charged, and convicted of...

This essay looks at Hawthorne's work through a frequently made dichotomy between the hippie and the square as types in American life.

In this video segment from "Cyberchase", the CyberSquad determines the fairness of a game in which there are three shapes distributed equally on nine squares. Uses popups, two minutes and 13 seconds.

A comprehensive site on the massacre at Tiananmen Square that includes a tour of the Square, the underlying themes of political debate in China, a chronology, and additional readings and links. There are also many interesting historical...

This discussion of the chi-squared goodness-of-fit test for statistical data also includes an example and a link to a critical values tables.

The Chicago Historical Society presents extensive information about the 1886 bombing at Haymarket Square that helped change the course of the labor movement. Read about the bombing, arrests, trial, executions, and other events that...

"Attention Workingmen! Mass Meeting Tonight, at 7:30." This pamphlet was distributed on May 4, 1886. Chicago had been simmering with labor disputes which culminated in a riot at Haymarket Square where eight officers were killed. Use this...

Take a look back at the events surrounding the day after the 1989 Tiananmen Square protests in Beijing, China when "a single, unarmed young man stood his ground before a column of tanks" symbolizing the struggle for freedom. Provides a...

A biography of Nicholas Kristof, a well-known journalist and author who has covered major events and issues around the world, particularly relating to human rights and social and economic inequality. He has received two Pulitzer Prizes...

Kids will have fun snapping chalk lines onto paper and then painting in the parts. Can be used as a way to teach parts and their relation to the whole or even more complex as fractions.

As early as 1866 a national union grew from the multitude of local unions in the country. Read about the growth of stronger unions, and find out what their goals were. See why the Haymarket Square Riot had an effect on unionization.

This CoolMath resource reviews the ways to solve quadratic equations: factoring, finding square roots, and using the quadratic formula.

A companion website to the documentary about the protests at Tiananmen in 1989, and the resulting Beijing Massacre of June 4.