Math Forum Internet News

Volume 3, Number 26

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29 June 1998                                   Vol. 3, No. 26


Math & Time | Games - Learning Kingdom | Fractal Modeling - Shodor

                    MATHEMATICS AND TIME


     The Science of Time, Timekeepers (Clocks, Watches) 
    and Timekeeping from The Teaching and Learning Center


A site with all kinds of resources for math explorations
that involve time. Included are organizations; information
sources; timepieces; subjects, issues, and topics in horology;
and ways of finding and setting the exact time, including
time zones and a time zone converter. You will also find
links to a wide variety of WATCH AND CLOCK MUSEUMS:


       TIME SERVICE DEPARTMENT - U.S. Naval Observatory       


An official Web source for the correct time in the United 
States. To find your local time zone, learn to convert 
from Universal Time, try directions for putting a clock 
on your own Web page, and more, see
                       WHAT TIME IS IT?  





For the very young, who want to play with the math they've
just begun to learn.



Learn to square two-digit numbers that end in five, or 
quickly multiply two-digit numbers by eleven. See how each 
trick works by watching step-by-step examples, read why it
works, and then test your skill and speed with a challenge.


Also from The Learning Kingdom: Math in the Kingdom (MITK),
a Web-based arithmetic tutor that teaches 1st, 2nd, and 3rd 
grade material directly over the Internet for a monthly
subscription fee. Take the guided tour or experiment with a
10-day free trial to see if the program meets your child's
needs (and whether it will crash your browser). 


    FRACTAL MODELING TOOLS - Shodor Education Foundation

Instructional resources and simulation software for
generating different kinds of fractals. Lesson plans are
available from within the simulations, and a Java version
and a simulation running on a remote server are provided 
for each unit:

  The Fractal Microscope
    Mandelbrot and Julia sets, the algorithms used to 
    create them, and the mathematics behind the graphics.

  The Snowflake Fractal Generator
    Specify a drawing rule that the computer will use
    to make curves like the Koch Snowflake.
  Sierpinski Gasket
    Model the 'Chaos Game'(a simple, apparently random 
    process with a not-so-random result) and change 
    the rules to make your own fractals.

The NCSA-Shodor BRIDGE Project offers three other ways to 
explore integrating curriculum with interactive media:

  ChemViz - a quantum chemistry visualization tool

  SimSurface - a potential energy minimization tool 
    using simulated annealing

  The Pit and the Pendulum - a quantitative investigation 
    of Edgar Allan Poe's short story

For best viewing of this site, a fast connection and a
Java-enabled browser are recommended.


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