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 Skip counting or word skipping? June 25, 2017
 Numicon – combining geometry and arithmetic June 22, 2017
 Discussing the meaning of “almost” with an 8 year old June 2, 2017
 From mathhater to mathematician and computer scientist: The story of Allison Bishop June 1, 2017
 A number talk that turned into an investigation May 26, 2017
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Tag Archives: sets
Family Regrouping
Two sisters, two parents, two cousins, and four grandparents, all met up at the park (true story). During the car ride home, one of the sisters (lets call her Katie), exclaimed, “There were ten of us at the park.” The … Continue reading
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Tagged #tmwyk, 6 years old, arithmetic, counting, games, sets, word math games
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A bit of Set Theory
Katie and I joined my sister’s Golden Key Russian School – Katie attends and I help out my sister with the math classes. We hope to write semidetailed descriptions of the lessons on the school’s blog, but here I will … Continue reading
Onetoone correspondence – Not always obvious to kids!
There are some very hard problems in combinatorics that involve showing that there is a bijection (onetoone 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