| Category | Format | Size |
|---|---|---|
| Beijing Normal University Edition Fifth Grade Mathematics Volume 1 | pptx | 6 MB |
"Reduction" PPT teaching courseware on the meaning of fractions
Description
"Reduction" PPT teaching courseware on the meaning of fractions
Part One: Learning Objectives
1. Combine with intuitive diagrams, experience the process of knowledge formation, and understand the meaning of reduction.
2. Explore and master reduction methods and be able to perform reductions correctly.
focus
Understand the meaning and method of reduction and be able to perform reduction correctly.
difficulty
Explore and master reduction methods and be able to perform reductions correctly.
About the PPT, the second part of the content: interpretation of the examples
Use fractions to represent shaded areas.
Observe carefully, what did you find?
In the second picture, the whole is divided into 12 points...
Use the knowledge you learned previously to explain Xiaoxiao’s findings.
Divide both the numerator and denominator of a fraction by...
Like this, dividing the numerator and denominator of a fraction by a common factor at the same time will keep the value of the fraction unchanged. This process is called reduction. 1/3 cannot be further reduced and is the simplest fraction.
Take a look and tell me how you can divide it.
Method 1: Successive reduction method.
Divide each time by their common factor 2.
Method 2: First-time reduction method.
Simply reduce the greatest common factor of the numerator and denominator.
About PPT, the third part: summary
Reduction method
First search: Find the common factor or the greatest common factor of the numerator and denominator.
Division by two: Use common factors (except 1) or the greatest common factor to divide both the numerator and the denominator.
Stop by three: Keep dividing until the numerator and denominator have only a common factor of 1.
About PPT, the fourth part: quiz in class
1. Please be the little judge. (Draw “√” if it’s right, “✕” if it’s wrong)
(1) The basis for reduction is the basic properties of fractions. ( )
(2) The numerator of the simplest fraction must be smaller than the denominator. ( )
(3) The numerator and denominator are two different prime numbers, and this fraction must be the simplest fraction. ( )
2. Make an appointment.
About PPT, the fifth part: homework after class
1. Select from the after-class exercises;
2. Complete the exercises in this lesson in the exercise book.
Keywords: Beijing Normal University edition fifth grade mathematics volume PPT courseware free download, approximation PPT download, meaning of fractions PPT download, .PPT format;
For more information about the "Reduction of the Meaning of Fractions" PPT courseware, please click on the "Reduction of the Meaning of Fractions" PPT tab.
"Reduction" PPT courseware download on the meaning of fractions:
Download PPT courseware of "Reduced Fractions" The Significance of Fractions Part One: Exploring New Knowledge Observe carefully, what did you find? Can you describe in your own words what approximation is? Like this, if the numerator and denominator of a fraction are divided by a common factor at the same time, the value of the fraction will not...
"Reduction" PPT download of the meaning of fractions:
"Reduction" The Meaning of Fractions PPT Download Part One: Exciting Introduction Question: What are the common factors of the numerator and denominator of the following fractions? What is the greatest common factor? How did you find it? Chat with your deskmates. ... ... ... Approximate PPT, in the second part...
"Reduction" The meaning of fractions PPT:
"Reduction" PPT on the meaning of fractions Part 1: Class introduction 1. Experience the process of knowledge formation and understand the meaning of reduction. 2. Explore and master reduction methods and be able to perform reductions correctly. 3. Explore the intrinsic connections between knowledge and develop good study habits..
File Info
Update Time: 2024-07-06
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