Tag Archives: Open the Lock

91 – the prisoner and four herrings

Problems with a Point is a great website!  You can search for problems by TOPIC, HABITS OF MIND (STRATEGIES), MATHEMATICS BACKGROUND, TECHNOLOGY, or DURATION. “Open the Lock” is from the site, and I really enjoyed working on it (albeit there was hair pulling).  It’s challenging for my geometry kids, but the lively and thoughtful discussions that come out of the groups make it worth presenting. […]

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