Archive for the ‘uncategorized’ Category

ExamView on OS X Lion

Posted: November 27, 2011 in uncategorized

Thank you, Julie for getting me running with ExamView on Mac OS X Lion! The short of it: snag ExamView version 7.51 and install on your Lion machine. I’m returning to Mac mountain after many years in Windows world and Linux land (remember OS 8?). Relearning things as simple as keyboard shortcuts (CTRL+SHIFT+Q nearly gave me [...]

3 Acts: Walls of Jericho

Posted: October 30, 2011 in uncategorized

See: Radiolab’s Walls of Jericho podcast from October 2010. Act 1: [mp3 | 8M] The hosts lay out the story of Jericho, where an Israelite army brought the walls down, supposedly by shofar (a ram’s horn) blasts. Along the way, we learn about the logarithmic decibel scale. In the final seconds of this clip, we [...]

Finding the Best Lock

Posted: August 14, 2011 in math, uncategorized

Can you help me make this into a 3 Acts problem? I was thinking some thing along these lines: Act 1: movie clip of someone trying to crack a combination lock. I want to set up the question “how long will it take?” Act 2: What are the rules for these combination locks? Maybe I [...]

Hot Dog Folds

Posted: March 27, 2011 in uncategorized

An early attempt at a math foldable, a photo by mgolding on Flickr. Thanks to @k8nowak for tweeting the link that got me reading about foldables. Now I understand what my kids mean when they say “hot dog fold”.

Could it really?

Posted: January 24, 2010 in uncategorized

According to the Title Text (hover your mouse over the comic to read it), the entire iTunes music library could fit in a soda can’s worth of Micro SD cards. Could it really? The numbers: Micro SD cards measure 15 mm x 11 mm x 1 mm. Soda cans have a diameter of approximately 65 [...]

Teachers are delegators

Posted: January 18, 2010 in uncategorized

Before I get to the new stuff, 2 notes. 1) Two months since my last post? Here’s my quick update: my schedule was completely swapped the day before second semester started. I had about 21 hours to get ready to teach my new students AND move classrooms across the building. I’m starting to find my [...]

My students will be calculating the circumference of the Earth, ala Eratosthenes (who did his work over 2200 years ago). Setup: put a few key facts on note cards and hand them out to a few students. Give everyone a copy of the task sheet. Challenge the class to bring you the circumference of the [...]

My summer blogging home

Posted: June 20, 2009 in uncategorized

North Dakota Bound, cowritten with the fabulous Rachel Golding.

My friend and colleague, Dana Huff, has a presentation highlighted on Slideshare.net today! A huge congratulations to her for being recognized for a great slide deck. “Using Blogs and Wikis for Professional Development” provides a wonderful introduction to more than just blogs and wikis. She also covers professional uses for Facebook and an addictive little [...]

Physics of Superheroes

Posted: July 14, 2008 in science, uncategorized

Dr. James Kakalios, author of The Physics of Superheroes has inspired me to frame an entire high school physics course around Superman, Spider-Man, The Flash and their other buddies. Here’s a little taste of the kind of science we’ll be learning: I’m outlining the course now to align with state physics standards. The biggest challenge [...]