Reflection: High Quality Task Zero and negative exponents - Section 2: Play of the Day

 

This year, I've raised the bar for what I expect for students to demonstrate their understanding.  In the days following this lesson, I ask kids to "prove" the various properties of exponents using an annotated example that proves that you can, for example, subtract exponents when you divide exponential amounts with the same base. 

 

This has led to a much deeper understanding of the various properties of exponents, and also created so much more understanding around both the zero property and negative exponents.

 

In this video, a student just models one way to prove the zero property of exponents, which can be done in conjunction with the quotient property.

  High Quality Task: Getting Students to Prove the Zero Property of Exponents - video of a student
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Zero and negative exponents

Unit 6: EXPONENTS AND SCIENTIFIC NOTATION
Lesson 2 of 10

Objective: SWBAT explore zero and negative exponents.

Big Idea: Use logic to prove the rules of zero and negative exponents. These rules are not made up - they make mathematical sense!

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16 teachers like this lesson
Subject(s):
Math, Number Sense and Operations, Exponents, 8th grade, negative exponents, properties of exponents, zero power property
  75 minutes
jeff li 6 2 image resized
 
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