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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: prime numbers
Just how many prime numbers are there?
Over the past few months, my 4th and 5th graders had a number of opportunities to explore prime numbers and factoring – they drew factor trees, discovered divisibility rules, played Prime Climb, and more. Last Sunday, I decided that they … Continue reading
Posted in Uncategorized
Tagged 4th grade, 5th grade, arithmetic, Euclid, factoring, prime numbers, proof
3 Comments
Factor “trees”
Recently, we had a few lessons on prime numbers and factoring with my 4th and 5th graders. Inspired by the beautiful drawings in this post, I had my students draw their own factor trees. Actually, most of their creations can only … Continue reading
Posted in Uncategorized
Tagged factoring, fun math, Golden Key Russian School, mathematical art, prime numbers
3 Comments
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
Posted in Uncategorized
Tagged arithmetic, division, fun discussion, fun math, multiplication, prime numbers
2 Comments