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Teaching prime numbers

Grade school kids have algebra looming in their immediate future, so they’re gonna have to learn about factoring.  A critical first step is understanding prime numbers.   [CCSS Standard.4.OA.B.4] Prime numbers, essentially, are the components from which integers are constructed.  A prime number is a number, greater than 1, that can only be evenly divided by … Continue reading

Mental mathematical muscle memory

I’m reading Robert Green’s book Mastery, which includes case studies (from Martha Graham to Michael Faraday to Benjamin Franklin) on attaining mastery.  Where Malcolm Gladwell took an academic/journalistic approach to a similar subject in his excellent book Outliers, in Mastery Green takes a deeper dive, highlighting traits to emulate. One passage resonated with me as … Continue reading

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