You've just found out that your neighborhood has been declared a gun-free zone. Choose which side of the issue you are on, and decide which civic actions you will take to support your position.
Test your knowledge about setting, characters, sequence, exposition, conflict, climax and resolution. Take this 14-question test, review your correct and incorrect answers, and print out your assessment.
Try to meet the world's projected energy demand by choosing from the available energy sources, while keeping atmospheric CO2 under control. You must avoid the limits and pitfalls associated with each energy source.
One way to solve a complicated problem is to solve a smaller version of the same problem. Without working out the larger problem, predict how many sheep will get shorn before impatient Eric, who is sneaking up in line little by little.
See how much you know about the European powers and the colonies they established in North America. Then boost your score in the lightning round as you locate the original 13 states.
Since the end of World War II, many European countries have been working to foster increasing unity. This interactive timeline traces the development and future of the European Union.
Practice evaluating Web sites to determine which ones are the most useful. Browse a Web site and evaluate it by answering the basic questions of who, what, when, where, why and how.
Vary two of the most important cosmological parameters, run the simulation and try to build our universe. Compare your simulated universe to real observations.
Use molecular information and observe female response patterns to learn about the mating calls of Physalaemus frogs. Examine the evolution of female preference for particular call characteristics.
The departments and agencies of the executive branch are responsible for regulating many of the things we use in our everyday routines. Follow a student through her day to find objects regulated by the government.
The President wears many hats such as Chief of State, Party Leader, Chief Executive and Commander-in-Chief. Try your hand at assisting the President with his schedule, as the Chief of Staff.
The name of an event, person or land acquisition will appear when you click on a square. Click on another square to match the event or person with the correct land acquisition in this two-minute game.
Explore the properties of four prisms. Change the direction and speed of each prism's rotation and highlight the numbers of faces, vertices and edges for each one.
