Ch 8: Common Core HS Functions - Rational Functions

About This Chapter

Use this chapter to help you teach your high school students about rational functions and to assist you in meeting the requirements for the Common Core. Lessons also include ways for you to teach the lessons in your classroom and tips for helping you recognize when students fully understand the standard.

Standard: Graph rational functions, identifying zeros and asymptotes when suitable factorizations are available, and showing end behavior. (CCSS.Math.Content.HSF-IF.C.7d)

About This Chapter

Once students have full knowledge of rational functions, they'll be able to make graphs of rational functions and find the end behavior and y-intercepts of rational functions. Lesson topics for this particular standard include:

  • Horizontal and vertical asymptotes
  • Finding the vertical and horizontal asymptotes of rational functions
  • Finding the zeros of rational functions

You'll know when your students have a good grasp on rational functions when they're able to successfully point out asymptotes and zeros and when they're able to graph a rational function. By learning the lessons of this standard, students can be better prepared for jobs in such areas as medical anesthesiology, sales analysis and aeronautical science.

How to Use These Lessons in Your Classroom

Here are a few tips that could come in handy when teaching rational functions in the classroom:

Use Quizzes as Homework

Instead of using lesson quizzes in class, you can assign them as homework just to see how good of a grasp students have on the previous topic. This can be a good indication of whether or not your class is ready to move on or if you need to spend more time on a particular topic.

Review Videos

At the beginning of each class, you could review the highlights of the previous day's lesson topic as a refresher. Not only is this a good way to remind students of what they've learned, it can also act as a foundation for the newest lesson.

Graphing Game

To make graphing rational functions a bit more entertaining, make a game of it that your students can play to earn extra points. For example, have them write a rational function to determine their weight on the moon. You can also incorporate identifying zero and asymptotes as part of the game.

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
Not Taken
Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
Not Taken

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