P-dog's blog: boring but important

Astronomy and physics education research and comments, field-tested think-pair-share (peer instruction) clicker questions, flashcard questions, in-class activities (lecture-tutorials), current events questions, backwards faded scaffolding laboratories, Hake gains, field-tested multiple-choice and essay exam questions, indices of discrimination, presentation slides, photos, ephemerae, astronomy in the marketplace, unrelated random sketches and minutiae.

20090118

Double rainbow, and Alexander's dark band

200812301725_146
http://www.flickr.com/photos/waiferx/3161878992/
Originally uploaded by Waifer X

Close-up of a double rainbow, with Alexander's dark band between them, taken with a Cingular 3125 (HTC "StrTrk") smartphone, in Aiea, HI.

200812301722_139
http://www.flickr.com/photos/waiferx/3161042535/
Originally uploaded by Waifer X

An additional third rainbow, counting the one painted on the side of TheBus, the public transportation system for the City and County of Honolulu.

P-dog's blog: boring but important

20090118

Double rainbow, and Alexander's dark band

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