"Understanding of Negative Numbers" Negative Numbers PPT Courseware

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"Understanding of Negative Numbers" Negative Numbers PPT Courseware

1. The conversation is exciting and introduces new lessons

Have you ever seen negative numbers in your life? Do you know what it means?

2. Combine the situation and understand the meaning

The following is the temperature forecast for six cities released by the Central Meteorological Observatory on the afternoon of January 21, 2012 (20:00 on January 21, 2012 - 20:00 on January 22, 2012).

There are many quantities in life that express two opposite meanings, such as above-zero temperature and sub-zero temperature, income and expenditure. Can you give any examples of this?

How to express quantities with two opposite meanings like these?

In order to represent two quantities with opposite meanings, two numbers are needed.

One is the numbers we have learned before, such as 3, 500, 4.7, 3/8, these numbers are positive numbers; the other is the numbers with a negative sign "-" in front of these numbers, such as -3, -500 , -4.7, - 3/8, etc. These numbers are negative numbers.

3. Return to life and expand applications

Read the question carefully. What information did you get? What don't you understand?

Do you know the altitude of your city? Talk about its specific meaning.

Using Beijing time as the standard, the time in Dhaka, the capital of Bangladesh, is recorded as -2 hours. Do you know the time at this time?

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For more information about the "Understanding Negative Numbers" PPT courseware, please click the "Understanding Negative Numbers ppt Negative Numbers ppt" tag.

"Understanding of Negative Numbers" Preliminary understanding of negative numbers PPT courseware 3:

"Understanding of Negative Numbers" Preliminary Understanding of Negative Numbers PPT Courseware 3 Please say the opposite words or sentences from the teacher. Look up and walk 200 meters forward. The elevator rises 15 floors. I deposit 500 yuan in the bank. Xiaohong scored 20 points in the knowledge contest. The canteen made 500 yuan. 1 above zero..

"Understanding of Negative Numbers" Preliminary understanding of negative numbers PPT courseware 2:

"Understanding of Negative Numbers" Preliminary Understanding of Negative Numbers PPT Courseware 2 Scientists set the freezing temperature of water as 0℃. Read: 0 degrees Celsius. Temperatures lower than 0℃ are represented by numbers with a - sign, such as: -15℃ read: minus 15 degrees Celsius. Can also be read as minus 15 degrees Celsius. Than 0..

"Understanding of Negative Numbers" PPT courseware for preliminary understanding of negative numbers:

"Understanding of Negative Numbers" Preliminary Understanding of Negative Numbers PPT Courseware Learning Objectives: 1. Be able to flexibly use the knowledge learned to solve more complex problems such as what fraction of a number is known and how to find this number; in the process of solving the problem Master some basic strategies to solve such problems...

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Update Time: 2024-10-06

This template belongs to Mathematics courseware People's Education Press Mathematics Volume 2 for Sixth Grade industry PPT template

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