Exponents in 7th Grade Math Lesson
Learn about the meaning of exponents, identifying bases and exponents, simplifying expressions, and evaluating expressions with exponents in this 7th-grade math lesson. Explore the laws of exponents, including multiplication and division rules, and enhance your understanding of integer exponents.
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Presentation Transcript
Accelerated Math 7/8 7th Grade Week 5 Lesson (May 4 - 8, 2020) Mrs. Nelson (SMS) & Ms. Petersen/Ms. Heath (MEMS) Exponents
Standards Addressed 8.EE.A.1 - Understand and apply the properties of integer exponents to generate equivalent numerical expressions. Materials Needed iPad or printed copy of the Google Slides Procedures Read each slide carefully, making sure you understand what is being presented. Follow the directions and learn something! We wish we could be with you.
What You Are Learning in This Lesson In this lesson, you will be learning about the meaning of exponents. We will learn about: the definition of the base and the exponent simplifying expressions with exponents evaluating expressions with exponents.
How You Will Know You Are Successful I can identify the base and exponent in a number written in exponential form. I can simplify expressions with exponents. I can evaluate expressions with exponents.
Identify the Base and the Exponent A term written in exponential form has a base and an exponent. The exponent indicates how many times the base is multiplied by itself. In the example, the base, 5, has an exponent of 2. This means 5 is being multiplied by itself twice. 52= 5 5 = 25
Evaluating Expressions with Exponents Some examples of evaluating expressions with exponents are shown.
Laws of Exponents: Multiplication Notice in the examples below, when multiplying powers with the same base, you are able to add the exponents.
Laws of Exponents: Division Notice in the examples below, when dividing powers with the same base, you are able to subtract the bottom exponent (denominator) from the top exponent (numerator).
Laws of Exponents: Power of Powers Notice in the example, when a power is raised to a power, we can expand the expression or just multiply the exponents.
Practice Complete the problems here or on a sheet of paper and if you choose to do so, share through one of the options on the next slide. 1. Evaluate 2 2. Simplify x x 3. Simplify (y ) 4. Simplify
Presentation Opportunity Options for Your Solutions This is just a suggested list. All of this is optional. Take a picture/screenshot and post to Google Classroom Make a video about your steps and post to Google Classroom Present to an adult or sibling Practice Khan Academy assignment(s) If you have another idea of how to present, try it and share with us!
Self-Assessment of Your Learning Look at the Success Criteria and self-assess your learning. Rate yourself 1-4 on where you are in these statements. You can do this by marking on the paper or use the markup tool on your iPad. ____ I can identify the base and exponent in a number written in exponential form. ____ I can simplify expressions with exponents. ____ I can evaluate expressions with exponents.
Practice Answers Complete the problems here or on a sheet of paper and if you choose to do so, share through one of the options on the next slide. 1. Evaluate 2 = 32 2. Simplify x x = x 3. Simplify (y ) = y18 4. Simplify = a5
