There is also an archive of previous problems with solutions. This is a lesson on the basics of the metric system. This test has 39 questions. If a question is answered incorrectly, the correct method is given and an alternate problem is displayed. This site is called the Casio Classroom and is hosted by the University of Central Florida.
Students can answer weekly problems and they have a chance of winning a prize.
During the summer months, there is only one problem per month. Salary Calculator Use this calculator to compare the cost of living in hundreds of U.S. and International cities. This activity includes instruction, examples and problems about scientific notation. This activity includes instruction, examples and problems about significant digits.