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Does it matter that roosters don’t lay eggs?

There is a particularly annoying puzzle that goes something like this:
“A rooster sits on the apex of a barn roof. The roof pitches at an angle of 43 degrees above the horizontal and is made of wood painted red. On the northern side of the roof, there is a large tree which casts a shadow […]

Posted in Being a good teacher, Thoughts about maths thinking | Tagged , , |

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Individual Ahas

At the Hmm… Sessions in November, something cool happened when a couple of the students were showing the rest of us the solution to a puzzle. (Update: Later this year, the Hmm Sessions were renamed “One Hundred Factorial” after the first puzzle we ever did.)
(For those who don’t know, The Hmm… Sessions are a regular […]

Posted in One Hundred Factorial, Thoughts about maths thinking | Tagged , |

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