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TI-Nspire™ Tips & Tricks
http://web.me.com/piman2/PimanNspire/Blog/Entries
/2009/3/3_TipsNTricks.html
Marc Garneau presented tips and tricks for expanding the
capabilities of the TI-Nspire at the T3 International
Conference in Seattle this past March. Here is his handout
from that presentation, posted on his blog in PDF format.
Richter Scale Day
April 29 is Richter Scale Day, celebrating the birthday of
Charles Richter. The Richter magnitude scale is used worldwide
to measure the amount of energy released during earthquakes,
particularly smaller, local quakes. Charles Richter and Beno
Gutenberg at the California Institute of Technology developed
the logarithmic scale in 1935 to study seismic activity in
California.
Algebra: In Simplest Terms
http://www.learner.org/resources/series66.html
- Program 19, "Logarithmic Functions," explains how the Richter scale measures quake magnitude
- Program 11, "Circle and Parabola," demonstrates how P and S waves are used to locate an earthquake's epicenter
Dr. Math exchanges on the subject:
Logarithmic Scales
http://mathforum.org/library/drmath/view/55520.html
Measurements on a Logarithmic Scale
http://mathforum.org/library/drmath/view/55574.html
Why Use a Logarithmic Scale to Display Data?
http://mathforum.org/library/drmath/view/71788.html
The Galileoscope™
http://www.galileoscope.org/
High-quality, low-cost, easy-to-assemble telescope kits
developed for the International Year of Astronomy (2009) in
celebration of "... the celestial wonders that Galileo Galilei
first glimpsed 400 years ago and that still delight stargazers
today." Free educational materials will be provided via the Web
site, and teachers are encouraged to share their own resources
as well.
More International Year of Astronomy sites:
National Aeronautics and Space Administration
http://astronomy2009.nasa.gov/
National Optical Astronomy Observatory
http://www.noao.edu/iya-noao.php
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