Lee

Welcome…

July 13, 2010

…to my blog. I write about science education, radical/liberal politics, accessible web design, web support for small “brick and mortar” businesses, and a little about my life. Since I write about such a broad spectrum of topics, you may want to click the category link (on the right) of the topic you are most interested [...]

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New Grade Machine support email group

June 29, 2010

Grade Machine’s creator, Misty City, closed and sold the program to Pearson, who then stopped work on and support for the program. So it’s up to the users of Grade Machine to help each other out. A new Google group is designed for peer-to-peer support for this wonderful grading program. You can find and join [...]

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Error analysis in volume measurements

June 9, 2010

I use the attached worksheet to walk my high school physics students through the process of determining the percent error in a calculated measurement. After these calculations, students then determine the range of their final results (± x cm3). Finally, they look at the range and discover that use of the “sig figs” rules gives [...]

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Grade Machine operating system checks

April 19, 2010

Since Grade Machine is no longer supported, we may start moving into operating systems (e.g. Windows XP, Mac OSX) that Grade Machine will no longer run under. Please add a comment to this post if you have installed Grade Machine on your operating system, and if you have been successful or not. This will help [...]

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Blogging my SF-San Luis Obispo bike trip on crazyguyonabike.com

April 3, 2010

I’m riding a six-day bicycle tour from San Francisco (well, Daly City BART, actually) to San Luis Obispo. I found a great web site for posting bike trips, CrazyGuyOnABike.com/leetramp. You can follow my trip there. I’m riding a great touring bike, the Surly “Long Haul Trucker.” The bike is not light, but it’s sturdy I’m [...]

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Snow on Claremont Avenue in Oakland/Berkeley hills

December 7, 2009
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Hayward’s “D Street” fault creep, curb offset evidence erased

December 7, 2009

Sadly, improvements in city streets can wipe out geologic evidence. D Street has been a great field trip stop to see earthquake fault creep, and appears in many guidebooks and web sites. But in 1997, Hayward repaved the road, including the sidewalks (they all needed it). When they repaved it, they straightened all the curb [...]

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Handout for using the TI 83 / 84 calculator in a science classroom.

October 23, 2009

I have updated my Analyzing data using your TI-83 or TI-84 calculator handout. New features include: Using the Table features to have the calculator solve for variables. Using Draw to calculate the slope of the tangent to a curved line. Standard letter size (8.5×11 inches) for easier printing. You can download a copy here: TI-graphing-calculator-tips-for-science.pdf. [...]

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New East Span Bay Bridge earthquake simulation video

October 15, 2009

Sorry, I couldn’t get the video below to not autostart. Click the Pause button to stop it if you don’t want it to run.

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Loma Prieta 20 year anniversary

October 14, 2009

This Saturday (October 17, 2009) marks the 20th anniversary of the Loma Prieta earthquake. Everyone who was in the Santa Cruz/SF Bay Area has their story of where they were, and KQED’s Forum call-in program had a great hour yesterday. It’s been long enough ago that for my students (juniors and seniors in high school) [...]

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