# what are good lessons to teach rational expressions

Dec 6, 2015 5:56pm

• Math
• 7
• Planning / Special Education

2

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• Dec 8, 2015 9:41am

Have you watched this video yet?
https://www.teachingchannel.org/videos/modeling-expressions-and-equations

Rational Expressions can be hard to teach because there is memorization involved for all the rules. Be sure to show how/why all the rules work so that students really grasp the concept behind them. For example if teaching the x^a*x^b= x^(a+b), show an example doing it without the rule first.

• Dec 17, 2015 7:21am

I would look at instructional guides and make sure it's in alignment with the common core standards. When we think of rational expressions, it's about comparisons: part to part, part to whole, or whole to part comparisons, proportional thinking. And then to fractions and its operations. If this is 8th grade algebra, and you're solving rational equations, students should know quadratic equations. Hmmm... That's a mouthful of connected ideas under such a broad topic. By now you had probably consulted with your colleagues and I'd be interested hearing back.