Bellinger: 8th Grade Benchmark Questions 21-24

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Presentation transcript:

Bellinger: 8th Grade Benchmark Questions 21-24 Take out your homework. Make sure your name is on your homework. Turn in your homework Rules of Exponent & Square Root Quiz on Friday

Bellinger: 8th Grade Benchmark Questions 21-24 Take out your homework. Make sure your name is on your homework. Turn in your homework Rules of Exponent & Square Root Quiz

Bellinger: 8th Grade Benchmark Questions 21-24 Take out your homework. Make sure your name is on your homework. Turn in your homework Rules of Exponent & Square Root Quiz

Learning Target: Evaluate square roots MCC8.EE.2 Evaluate square roots of small perfect squares and cube roots of small perfect cubes. Know that √2 is irrational. Learning Target: Evaluate square roots Mathematical Process Standards 1. Make sense of problems and persevere in solving them. 2. Reason abstractly and quantitatively. 3. Construct viable arguments and critique the reasoning of others. 4. Model with mathematics. 5. Use appropriate tools strategically. 6. Look for and make use of structure. 8. Look for and express regularity in repeated reasoning.

INVERSE OPERATIONS WHAT IS THE INVERSE OPERATION OF … SUBTRACTION? DIVISION? ADDITION? MULTIPLICATION? Learning Target: Evaluate square roots

The square of an integer is a perfect square. 3 2 1 The square of an integer is a perfect square. The opposite of squaring a number is taking the square root.

EE2Key Vocabulary 49 Learning Target: Evaluate square roots Term Definition Example Perfect square a number with a square root that is a rational number 16 is a perfect square because 4 x 4 = 16 or -4 x (-4) = 16 Square root One of the two equal factors of a number 49 = 7 or -7 Radical The symbol which indicates the principal square root of a number radicand The number under a radical sign 49

Create a number line from 1-20 Learning Target: Evaluate square roots Can you create a perfect square? Create a number line from 1-20 A= lw The side dimensions of a square 1u

4x4

Do you know your perfect squares? 1 Ö1 = 1 81 Ö81 = 9 4 Ö4 = 2 100 Ö100 = 10 9 Ö9 = 3 121 Ö121 = 11 16 Ö16 = 4 144 Ö144 = 12 25 Ö25 = 5 169 Ö169 = 13 36 Ö36 = 6 196 Ö196 = 14 49 Ö49 = 7 225 Ö225 = 15 64 Ö64 = 8