0rthodontist
Science Advisor
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Long division doesn't show you much about what division actually is. It just says to follow a process, which is no more insightful about the value of 3/6 than than reading the result off of a calculator. It's good because it teaches number manipulation skills, especially if it's done mentally rather than on paper. But it doesn't show you much about the number. Long division is useful for teaching polynomial division but I don't know of any other good application.
Also, I don't like the word "rote." Memorization need not be rote. If you learn to do basic algebra mentally, it drives you to develop a good memory for certain symbols and numbers. But it's hardly rote. Not that rote is bad, when appropriate--it's just that rote is the very first step in learning to remember things. You don't learn your multiplication tables by experimenting with rocks. But memorization through practice is the next step. Not all memorization is rote.
According to a "Scientific American" article a few months ago, a good memory for your subject is an essential part of being skilled about your subject. Chessmasters can remember board positions far better than lesser players. Other things I have read and experienced support this. Furthermore, memory is not a terribly difficult skill to teach. It's just a matter of the student practicing a lot; almost anyone can develop a phenomenal memory for anything, with enough practice. And in certain subjects, math being one of them, a phenomenal memory equals much better skills.
I completely disagree that most students are doing any kind of algebra before they learn the symbols. If you ask a child who has not taken any basic algebra to find 2 numbers a and b such that a + 2b = 30 and a + b = 12, they probably wouldn't be able to solve it. I can remember being presented with these kinds of things in 4th grade or so--guess and check was all I could come up with. I doubt that I was an unusual case. This only becomes more true as the math becomes better, because it really has no analogue to everyday experience.
Also, I don't like the word "rote." Memorization need not be rote. If you learn to do basic algebra mentally, it drives you to develop a good memory for certain symbols and numbers. But it's hardly rote. Not that rote is bad, when appropriate--it's just that rote is the very first step in learning to remember things. You don't learn your multiplication tables by experimenting with rocks. But memorization through practice is the next step. Not all memorization is rote.
According to a "Scientific American" article a few months ago, a good memory for your subject is an essential part of being skilled about your subject. Chessmasters can remember board positions far better than lesser players. Other things I have read and experienced support this. Furthermore, memory is not a terribly difficult skill to teach. It's just a matter of the student practicing a lot; almost anyone can develop a phenomenal memory for anything, with enough practice. And in certain subjects, math being one of them, a phenomenal memory equals much better skills.
I completely disagree that most students are doing any kind of algebra before they learn the symbols. If you ask a child who has not taken any basic algebra to find 2 numbers a and b such that a + 2b = 30 and a + b = 12, they probably wouldn't be able to solve it. I can remember being presented with these kinds of things in 4th grade or so--guess and check was all I could come up with. I doubt that I was an unusual case. This only becomes more true as the math becomes better, because it really has no analogue to everyday experience.