Reflection: Developing a Conceptual Understanding Extraneous What?! - Section 6: Wrap It Up


Students provided an assortment of explanations about extraneous solutions which were written on the board. As a class we then summarized these and each student copied the summary into their notes.

I've included this example as a lesson reflection because I think it shows the value of having students write things out in their own words.  Individually, as shown, not every student covered all the key elements aspects of extraneous solutions, yet collectively we were able to developed a pretty solid definition. 

  Developing a Conceptual Understanding: Student Summaries
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Extraneous What?!

Unit 6: Algebraic Reasoning
Lesson 3 of 7

Objective: SWBAT give examples of simple rational and radical equations showing how extraneous solutions might occur.

Big Idea: But I did all the work right so my answer must be correct?! Help students learn when that claim just isn't true by looking at extraneous solutions.

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1 teacher likes this lesson
Math, algebraic relationship, Algebra, rational equations, radical equations, Algebra II, master teacher project, 11th Grade, extraneous solutions
  50 minutes
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