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"Reciprocal" Fraction Multiplication PPT Download

Part One: Learning Objectives

1. Recognize reciprocals, understand the meaning of reciprocals, and master the method of finding the reciprocal of a number. (emphasis)

2. Understand that two numbers that are reciprocal to each other are interdependent. (difficulty)

Countdown PPT, part two: exploring new knowledge

Knowledge Points The Meaning of Countdown

(1) Tell me what you discovered.

(2) You can use the area of ​​a rectangle to further understand the reciprocal. Take a look and talk about it.

Knowledge refining

Two numbers whose product is 1 are reciprocals of each other.

Knowledge points: How to find the reciprocal of a number

(3) The areas of the rectangles below are all 1. Please fill them in.

(4) Is there a reciprocal to 0? Tell us what you think.

Knowledge refining

1. How to find the reciprocal of a number:

Fraction: Swap the positions of the numerator and denominator.

Integers: Think of integers as fractions whose denominator is 1, and swap the positions of the numerator and denominator.

Decimals: convert them into fractions, exchanging the positions of the numerator and denominator.

The reciprocal of 2.1 is itself; 0 has no reciprocal.

Countdown PPT, Part 3: Consolidation Practice

1. Fill it out. (Selected from textbook P32 T2)

2. The areas of the rectangles below are all 1, fill them in. (Selected from textbook P32 T3)

3. Write the number directly. (Selected from textbook P32 T4)

4. Fill in ○ with “＞”, “＜” or “=". (Selected from textbook P32 T5)

5. Take a look and think about "1=?". Can you write different calculations? (Selected from textbook P32 T6)

Countdown PPT, Part 4: Class Summary

What knowledge have you learned in this class?

The product of the two reciprocal numbers is 1. The numerators and denominators of these two numbers are reversed.

The reciprocal of 1 is itself; 0 has no reciprocal.

Countdown PPT, Part 5: Homework

Assignment 1: Complete the exercises related to the textbook.

Assignment 2: Complete the corresponding exercises.

Keywords: Free download of Beijing Normal University Edition fifth grade mathematics PPT courseware for the second volume, reciprocal PPT download, fraction multiplication PPT download, .PPT format;

For more information about the "Fraction Multiplication Reciprocal" PPT courseware, please click the Fraction Multiplication PPT Reciprocal PPT tab.

"Reciprocal" Fraction Multiplication PPT:

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Update Time: 2024-11-15

This template belongs to Mathematics courseware Beijing Normal University Edition Fifth Grade Mathematics Volume 2 industry PPT template

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