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December 11, 2007
Connor Math Work 2007/12/11
We are starting to get into the really cool stuff now: primes and factorization. Connor keeps forgetting the rule for divisibility by 3 (though he remembers the rule for 9!), but other than that has the idea of testing a number for divisibility down pat. So we are on to the Sieve of Eratosthenes, and factor trees, and such yummy stuff. The Dolciani book is also challenging Connor to do more thinking. For example:
Explain why the sum of two prime numbers greater than 2 can never be a prime number.
So today I am having Connor do the p91 section A problems, and tomorrow the section B and C problems.
Posted by jeff at December 11, 2007 11:38 AM
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