A couple weeks ago Sam urged people to talk about little tips and tricks done in their classrooms. Since I found THE CLAW so helpful, I thought it would be only fair if I shared a trick of mine.
The Rainbow rule, a Sweeney original, is my favorite as it's useful for all of my classes from Algebra 1 to Honors Calculus.
Whether my algebra students come across this...
or my calculus students come across this...
...they either don't seem to know how to do it, or are confident about doing it the wrong way.
Enter the rainbow rule:
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I do this too! I don't call it rainbow, though. I like rainbow better! Thanks.ReplyDelete
Thanks for sharing. My students will be able to remember this easily!ReplyDelete
Wow! This is the first time that I have seen this technique. I'll remember this! Thanks!ReplyDelete
I think this will help my students so much more then the standard "keep change flip!" Thank you!ReplyDelete
I've been doing this for years as IP/OP (Outside Pair over Inside Pair). It's a great trick for getting questions right, but they have to remember to turn a traditional divide by question into a fraction over a fraction. Sometimes with students who are having trouble with math, the reason for that doesn't stick. I suspect that it may feel counterintuitive to students having trouble with fractions to make mega-fractions.ReplyDelete