Very short overview of William McDougall, with a short list of publications. Briefly discusses his contributions to psychology.

This lesson plan is a great way to observe the flow of water. Kids can do this experiment at home by following this easy procedure, complete with pictures.

What colors do you see in a bubble? Why do you see colors in a bubble? Use this site to find out the answer to these questions with this easy experiment.

Children can look around corners with this homemade periscope. Great instructions at this Exploratorium site on how to build a periscope.

Students can make ooze and learn about different qualifications of matter. An easy procedure is provided to make gooey ooze that you can play with when you are done.

By making oil float on water--with the help of other ingredients--students can create a lava-lite effect.

Students create their own airplane using straws and other materials and learn the principles of aerodynamics.

Students create a blimp and then experiment with the design to improve its aerodynamics.

Students can experiment with a home-made helicopter that lets them change the blades to see how real aerodynamics work.

At this site students will use origami to fold a paper airplane that fly better than the classic dart airplane.

Ever wonder why bats live in caves? Or why bats don't fly into objects at night? This article describe why bats thrive in the protected shelter a cave provides. It also explains how bats use echolocation to locate food and avoid obstacles.

This handy PowerPoint presentation introduces the concept of sentence diagramming. It includes a number of examples.

Students can practice classifying triangles based on angle measurements through a series of self-check exercises and timed learning games.

Students can practice classifying triangles based on side lengths through a series of self-check exercises and timed learning games.

[Free Registration/Login may be required to access all resource tools.] Students will practice converting between liters and milliliters.

[Free Registration/Login may be required to access all resource tools.] Braingenie builds mastery and sharpens problem-solving skills. Students can learn, practice, and quiz themselves on thousands of skills in the areas of math and...

Simple lab activity designed to show a property of polymers which gives them their strength.

The Brigham Young University provides information on the terms set by the WWI allied powers for the Armistice. Official release by the German Government, published in the Kreuz-Zeitung, November 11, 1918.

An online interactive activity in which students create a postcard with a scene from colonial Williamsburg and send by email to a friend.

[Free Registration/Login may be required to access all resource tools.] Watch a short video to review probability of compound events.

Article by John E. Bregger, from Monthly Labor Review, January/February 1996. Describes the measurement of self-employment and includes a short analysis of trends in self-employment, covering the period from 1948 to 1996.

This problem set is based on a question received from a woman with red-green color blind as well as other members of her family. She wanted to know if we could help her understand how she inherited her color blindness.

Students have the opportunity to interpret actual case results from the use of the Restriction Fragment Length Polymorphism (RFLP) method to characterize human DNA samples as applied in paternity analysis and sex crimes investigations.

Students practice a problem using DNA profile analysis to characterize human DNA samples as applied in paternity analysis and sex crimes investigations.