Tag Archives: problem solving

31 – emperor’s banquet

I like this classic problem a lot. My algebra kids were white-boarding this PS; a few groups found certain limited patterns within it, but they’ll need to track their work more systematically to see the full pattern. Emperor’s Banquet You have been invited to the emperor’s banquet.  The emperor is a rather strange host.  Instead of sitting […]

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30 – Salute! game

I was not happy this morning to see my sub’s notes about how poorly behaved my algebra kids were yesterday. There isn’t a fiber in me that will tolerate disrespect, so they got an earful from me. My sub is a math major, finishing up her teaching credential. She’s been my main sub for the […]

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28 – semicircles problem and block game

At least once a week, I have my students work on a group PS. Today my geometry class started on this problem (can’t remember where I got it): In the figure below, ABCD is a square. The four semicircles are congruent and each is tangent to two of its neighbors. Each side of the square contains the diameter […]

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26 – taco cart

In geometry we worked on Dan’s 3-Act Taco Cart — great activity!

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20 – estimations, Ricky the sheep, missing area

My 6th graders had our first day with Estimation180.com. I’m waiting for the algebra kids to get tired of the Block Game, but still no such thing! They’re only getting better at the game — they’re blocking each other and showing work for each problem. In the second hour of algebra, we worked on a group […]

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16 – arranging whole numbers

My geometry kids worked on this fun problem: Below is an orderly way to arrange the whole numbers.  What number is directly above 100?  Directly above 1000?  What is a way to tell what number is directly above any given number? . . . 16    17    18    19    20    21 11    12    13    14    15 7      8      9     10 4      5      6 2      3 1 […]

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14 – pigeon hole principle

It’s Friday and my geometry kids finished working with “if-then” statements during the first hour; so in the second hour, I gave them this problem: Five Couples Jake and his wife recently attended a party at which there were four other married couples. Various handshakes took place. No one shook hands with himself (or herself) […]

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9 – painted cubes

Geometry kids worked on the painted cubes problem.

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