Tag Archives: philosophical

First of many?

When I first told Katie (6 y/o) that I signed her up for the Math Kangaroo competition, she got very excited and immediately started bombarding me with questions.  Will I win?  What if I don’t win?  What if I can’t solve … Continue reading

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Facing the impossible

Two weeks ago in class we followed up our previous lesson on parity with some logic puzzles.  The middle groups (ages 6-7) were faced with the following task.  They were each given 5 cups, facing down.  Their challenge was to … Continue reading

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Slow and steady wins the race

This story begins with Katie trying to solve the following problem: In 36 years, my grandmother will be 100.  How old is my grandmother now? I am sure that it didn’t take you very long to solve this problem in … Continue reading

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What is Math?

Yesterday was my first day this academic year of teaching math at the Golden Key Russian School. We have four groups with kids’ ages ranging from 4 to 9 years old. I started off all the classes by asking the … Continue reading

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The Joys of Puddles

This evening I went on a walk with Zoe.  We were walking along a secluded path, far away from any cars, so I let her run a little bit ahead of me.  Suddenly Zoe comes to a stop and I … Continue reading

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To win or not to win?

I am sure that almost every parent has faced this dilemma when introducing a strategy game to their kids: in those first few critical games, how often should I win and how often should I give in?  On one hand … Continue reading

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One-to-one correspondence – Not always obvious to kids!

There are some very hard problems in combinatorics that involve showing that there is a bijection (one-to-one correspondence) between two set of objects, thus showing that the two sets have the same number of elements.  On the other hand, we … Continue reading

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