Lesson Plan : Powers and Exponents
Teacher Name: | Ben Middleton |
Grade: | Grade 7-8 |
Subject: | Math |
Topic: | Powers and Exponents |
Content: | Standard form base exponent power |
Goals: | Students will learn to translate products into exponents as well as exponents into products of the same factor. |
Objectives: | a.Translate products into exponents. b.Translate exponents into products of the same factor. |
Materials: | |
Introduction: | In math there are a lot of ways to write numbers. Many of them can take a while to write. But there are some ways that allow us to make writing numbers easier and shorter. One way to do this is by using exponents. Today we are going to talk about exponents, what they are and how you can use them to simplify writing numbers and equations. |
Development: | Go over following definitions: Standard form-Normal way of writing a number. Ex. 10,000 Base-main number. Exponent-Tells us how many times the base is used as a factor. Powers-Numbers that are expressed using exponents. Go over how to write products of the same factor using exponents. Then go over how to write exponents as products of the same factor. Finally talk about evaluating equations with exponents. Examples: 1. 5x5=five to the second power or five squared. 2. 9x9x9=nine to the third power or nine cubed. 3. 8x8x8x2x2xyxy=eight squared x two squared x y squared. 4. eight squared= 5. three cubed= 6. two to the fourth power. 7. c to the fifth power. 8. 5ysquared if y=2. =20 9. psquared msquared if p=2 m=3. =36 10.(rm)squared if r=4 and m=3. =144 |
Practice: | Go over three from each section on worksheet. Use other examples below if students need more practice. 2 x 2 x 2 x 3 x 3 x 7=two cubed x three squared x seven. 3 x 3 x 5 x 7 x y x y x y=three squared x five x seven x y cubed. h cubed= |
Accommodations: | |
Checking For Understanding: | Check students understanding of writing products as exponents correctly as well as being able to properly evaluate the expressions by using the proper number given for each variable and then solving correctly as well. |
Closure: | |
Evaluation: | Students did well with writing products as exponents but struggled quite a bit with the sectiion for evaluating expressions. We will go over these types of problems at the beginning of the next class period to strengthen the students comprehension of this. |
Teacher Reflections: | Students struggled at first with evaluating expressions so we spent additional time on this concept over the next two days until they were firm. |
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