"Adding Rational Numbers" Rational Numbers PPT Courseware 4

Description

"Adding Rational Numbers" Rational Numbers PPT Courseware 4

1. Textbook analysis

1. Status and role: basics

2. Teaching objectives: Understand meaning, master rules, and operate accurately; and cultivate students' ability to observe, analyze, and generalize.

3. Key points and difficulties: The key point is the understanding and application of the addition rules of rational numbers; the addition of two numbers with different signs is the difficulty of this lesson.

2. Teaching methods and teaching material processing

3. Teaching process

1.What are the two parts of the representation of negative numbers? (minus sign and number)

2. Compare the size of each group of numbers below:

(1) -2 and +6

(2) -5.3 and -2.7

(3) -2.3 and -5

Consolidation exercises:

1. If the sum of two numbers is a negative number, then it must be ()

A. Both numbers are negative.

B. Of the two addends, one is negative and the other is zero.

C. One addend is positive and the other is negative, and the absolute value of the negative number is greater than the absolute value of the positive number.

D. There are three possibilities A.B.C.

2. If the sum of two rational numbers is a positive number, then the following is correct ( )

A. Both numbers must be positive.

B. Both numbers are not zero.

C. At least one of the two numbers is positive.

D. At least one of the two numbers is negative.

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

"Adding Rational Numbers" Rational Numbers PPT Courseware 3:

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"Adding Rational Numbers" Rational Numbers PPT Courseware 2:

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"Adding Rational Numbers" Rational Numbers PPT courseware:

"Adding Rational Numbers" Rational Number PPT Courseware Exploring the Rules of Addition of Rational Numbers 1. A car drives left and right. We stipulate that going left is negative and going right is positive. Then driving 5km to the right is recorded as +5km, and driving 5km to the left is recorded as +5km. +5km. If this car goes first to...

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Update Time: 2024-09-11

This template belongs to Mathematics courseware People's Education Press Seventh Grade Mathematics Volume 1 industry PPT template

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