Quick, what's eight-ninths of twenty-seven? If you solved it like my third graders, you divided the total by the denominator and then multiplied by the numerator. 27 divided by 9 is three; three times eight equals 24. It's pretty easy, right?
Actually, no it isn't. At least not for third graders. For my students, that problem was fairly difficult. Rigorous, if you will. It was a hard lesson to teach, but most of them finally got it.
Our district switched to a new math curriculum this year. It's more rigorous. Way more rigorous. And that's a good thing, according to all the school reform gurus, including Arne Duncan, our new Secretary of Education. He wants to implement high, nation-wide standards in lieu of the piecemeal, state-by-state approach that we're using now. He also thinks we should have a longer school year, which in an astounding display of poor timing, he announced just last week.
Meanwhile, back in my district, we had to cancel summer school this year. Guess why? That's right, as soon as we switch to a tougher math curriculum, we find out that we can't afford to offer summer school for the kids who need more time to learn it.
So here's an idea:

