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 Fibonacci Trees March 22, 2017
 Why not count on our fingers? March 18, 2017
 Time, symmetry, and unexpected turns March 16, 2017
 The Piaget Phenomenon March 12, 2017
 Four colors or more? March 10, 2017
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Tag Archives: multiplication
Double perfect squares
We have recently done a unit on perfect squares in school. The following conversation with Katie (8yo) happened completely spontaneously on a peaceful, evening ride home. K: 10,000 is a double perfect square. Me: What do you mean? K: Well, … Continue reading
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Tagged #mathed, #tmwyk, 8 years old, math conversation, multiplication, perfect squares
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Dots in a Square from Math Without Words
Recently, my third grade class and I have fallen in love with Math Without Words by James Tanton. This is a delightful collection of math puzzles, ranging in difficulty from fairly easy to quite hard, but all mathematically beautiful. Occasionally, … Continue reading
Exploring Rectangles
Friday is a special day in our math classes at the Main Line Classical Academy. We read and discuss mathematical stories and we do exploration projects. Here is the project that we did with the 2nd4th grades last Friday. It … Continue reading
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Tagged 2nd grade, 3rd grade, 4th grade, area, discussion, exploration, geometry, Main Line Classical Academy, multiplication
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Napier’s Bones
Recently, my husband was reading on Wikipedia about John Napier. He became very intrigued with Napier’s bones, and decided to see whether we can acquire some. I was very excited by the prospect as I have been lamenting about not … Continue reading
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Tagged arithmetic, famous mathematicians, handson activity, manipulatives, math history, multiplication
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Fun With Multiplication?
For the past few weeks in class, we have been exploring multiplication. A few months ago, we had learned about and practiced skip counting, so this time around we started by discussing why this might not always be practical or … Continue reading
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Tagged class, combinatorics, geometry, Golden Key Russian School, multiplication
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Chips for All Seasons
Yesterday’s lesson with Katie and Varya consisted of exploring various ways of using colorful game chips for doing fun math. The first activity involved dividing the chips between the doll Nina and the bear Stanford according to specified rules (I … Continue reading
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Tagged arithmetic, fun math, games, learning games for kids, lesson, multiplication, word problems
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Rectangular Numbers?
A few days ago Katie and I played the following game: one of us would say a number and the other one would have to make a rectangle out of that many squares (actually we used the board and chips … Continue reading
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Tagged arithmetic, division, fun discussion, fun math, multiplication, prime numbers
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