"Powers of Rational Numbers" Rational Numbers PPT Courseware 4

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People's Education Press Seventh Grade Mathematics Volume 1	pptx	6 MB

"Powers of Rational Numbers" Rational Numbers PPT Courseware 4

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Upload Time: 2024-11-21

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Description

"Powers of Rational Numbers" Rational Numbers PPT Courseware 4

1. Guess

Fold a thin piece of paper in half once, twice, three times...how high will it be when it is folded 20 times?

2. “Pyramid Math” Game

Study the mathematical model first, then fill in the answers to the questions based on your observations

1² = 1

11² = 121

111² = 12321

1111² = 1234321

11111² = 123454321

111111111² = 12345678987654321

Think about it, discuss it

(1) What does 2² and 2³ mean?

(2) How can a×a×…………×a be expressed?

(3) What are the base, exponent and power of 34?

(4) What are the base, exponent and power of 3?

summary:

1. Rational number exponentiation is another operation after addition, subtraction, multiplication and division. It is a special case of multiplication and a simple operation of consecutive multiplication of the same factors.

2. The sign rule of powers: any power of a positive number is a positive number; the odd power of a negative number is a negative number, and the even power of a negative number is a positive number.

Keywords: Rational numbers courseware, Rational numbers exponentiation courseware, New People’s Education Edition seventh-grade mathematics PPT courseware, seventh-grade mathematics slide courseware download, Rational numbers PPT courseware download, Rational number exponents PPT courseware download, .ppt format

For more information about "Rational Numbers Powered by Rational Numbers" PPT courseware, please click the Rational Numbers Powered by Rational Numbers ppt tag.

"Power of Rational Numbers" PPT courseware 4:

"Power of Rational Numbers" PPT Courseware 4 Collaborative Exploration 1: Fold in half twice and you can cut into 4 pieces, that is, 22 pieces; Fold in half three times and you can cut into 8 pieces, that is, 222 pieces; Question: If you fold in half 10 times, how many pieces can you cut into? ? Please use a formula to express it (no need to calculate the result). If you fold it in half 100 times, the formula...

"Power of Rational Numbers" PPT courseware 3:

"Power of Rational Numbers" PPT Courseware 3 Teaching Objectives Knowledge and Skills 1. Through examples, experience the process of generating the concept of power; 2. Understand the concepts of power, power, exponent, and base, and master the representation of power and power; 3. Understand the symbolic law of power and be able to carry out rational...

"Power of Rational Numbers" PPT courseware 2:

"Powers of Rational Numbers" PPT Courseware 2 There is a piece of paper with a thickness of 1 micron. After folding it in half 50 times, please imagine how high the thickness is? ⑴ After folding twice, how many microns is the thickness? 221 ⑵ After folding it in half three times, how many microns is the thickness? 2221 ⑶ After folding in half 4 times, the thickness...

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Update Time: 2024-11-21

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