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Some of you who have small children may have perhaps been put in the embarrassing position of being unable to do your child's arithmetic homework because of the current revolution in mathematics teaching known as the new math.
So as a public service here tonight I thought I would offer a brief lesson in the new math. tonight we're going to cover subtraction. this is the first room I've worked for
a while that didn't have a blackboard so we will have to make do with more primitive visual aids, as they say in the \"Ed biz.\" consider the following subtraction problem, which I will put up here 342 - 173.