The Art of Beauty
Attaining ideal beauty in the 18th century might require hog's lard, mousehide, toxic lead, and daily application of gin. Historical Interpreter Meg Brown shares her favorite discoveries.
Problem solving is the thought processes involved in solving a problem. It is both a means of developing students' knowledge of mathematics and a critical outcome of a good mathematics education. A mathematical problem, as distinct from an exercise, requires the solver to search for a method for solving the problem rather than following a set procedure. Mathematical problem solving, therefore, requires an understanding of relevant concepts, procedures, and strategies. To become good problem solv
The Physical and Theoretical Chemistry Laboratory: Oxford University: Chemical and Other Safety Info
Working with chemicals can be very dangerous if properties of the chemicals are not known. This site serves "as a source of general information about the potential hazards of chemicals," but it warns that the Material Safety Data Sheets (MSDS) should always be obtained from the manufacturer. Compiled by the Oxford University chemistry department, the resources given on this site complement MSDS sheets very well. For instance, a brief guide explains how to properly use and interpret them, and a m
Salamander Feeding Movies
This Web site is compiled by salamander biologist Stephan Deban, who offers a look at a number of different feeding strategies used by salamanders. High-speed video clips of twelve different salamander species are available for viewing, accompanied by brief descriptions of each species and their particular feeding behavior. This Web site is easy to navigate and interesting to visit, even for those unfamiliar with the field of salamander biology.
Climate of 2002 Preliminary Annual Review
The National Climatic Data Center of the National Oceanic and Atmospheric Administration (NOAA) has made available the Climate of 2002 Preliminary Annual Review Web site. Visitors will find numerous charts; graphs; tables; and descriptions of global temperatures, temperature trends, regional temperatures, and global precipitation. A US climate summary, as well as information on significant events, the Atlantic hurricane season, and the western US wildfire season, is also available. The site has
Human Genome Project Information: DNA Forensics
A detailed introduction to DNA forensic identification can be found on this Web site, provided by the US Human Genome Project (coordinated by the Department of Energy and the national Institutes of Health). The site includes descriptions of or links to a number of fascinating case studies, such as proving the son of executed French King Louis XVI and Marie Antoinette did indeed die as a child in prison, and testing claims that African Lemba tribesmen are directly descended from the ancient tribe
Earth and Space
In earth and space science, students study the origin, structure, and physical phenomena of the earth and the universe. Earth and space science studies include concepts in geology, meteorology, oceanography, and astronomy.
Through a five-lesson series with five hands-on activities, students are introduced to six simple machines - inclined plane, wedge, screw, lever, pulley, wheel-and-axle - as well as compound machines, which are combinations of two or more simple machines. Once students understand about work (work = force x distance), they become familiar with the machines' mechanical advantages, and see how they make work easier. Through an introduction to compound machines, students begin to think critically ab
Rube Goldberg and the Meaning of Machines
Simple and compound machines are designed to make work easier. When we encounter a machine that does not fit this understanding, the so-called machine seems absurd. In this lesson, the cartoons of Rube Goldberg are introduced and engage the students in critical thinking about the way his inventions make a simple task even harder to complete. As the final lesson in the simple machines unit, the study of Rube Goldberg machines can help students evaluate the importance and usefulness of the many ma
Floating and Falling Flows
Students discover fluid dynamics related to buoyancy through experimentation and optional photography. Using one set of fluids, they make light fluids rise through denser fluids. Using another set, they make dense fluids sink through a lighter fluid. In both cases, they see and record beautiful fluid motion. Activities are also suitable as class demonstrations. The natural beauty of fluid flow opens the door to seeing the beauty of physics in general.
Nasdaq, ICE go after NYSE
Summary of business headlines: Nasdaq OMX, ICE offer $11.3 billion for NYSE Euronext; U.S. job growth near one-year high; Gas prices slow U.S. auto sales; Wall Street continues rally.
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