"Negative Number Examples" Negative Number PPT Courseware

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"Negative Number Examples" Negative Number PPT Courseware

1. Create situations, generate needs, and understand negative numbers

(1) Create situations and generate needs

Questions: (1) What problems did the teacher librarian encounter? Can you help her record it?

(2) Classmate Xiao Ming recorded it like this. Do you think he made the situation clear? how do you think.

(2) Solve problems and experience symbolization

Question: (3) How can I record the situation clearly? Please think of a way.

(4) Some students use words and some use symbols. Are there any similarities between these different expression methods? Monitoring: They are all in pairs, with opposite meanings...

(3) Understanding negative numbers

A number like "-15" is called a negative number; this number is pronounced: minus fifteen. "-" has a new meaning and role here, called "minus sign". "+" is a positive sign. For example, "+15" is a positive number and is read as: positive fifteen. We can add "+" in front of 15, or we can omit it. In fact, many of the numbers we knew in the past were positive numbers.

2. Connect with reality and understand negative numbers

(1) Understand the negative numbers in temperature

1. 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).

2. Question: Please fill in the form below based on the information in the picture above, and then tell me what the numbers you filled in mean.

(2) Understand the negative numbers in passbooks

In addition to positive and negative numbers in thermometers, they are also found in passbooks.

What do the above numbers mean? How do you know.

3. Practice to consolidate and strengthen understanding

1. Fill in the blanks

Mount Everest is approximately 8,844 meters higher than sea level, and the Turpan Basin is approximately 155 meters lower than sea level.

2. Tell us whether the following two altitudes are above or below sea level.

4. Homework

Homework: Do it on page 4, questions 1 and 2.

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For more information about the "Negative Numbers and Negative Numbers Examples" PPT courseware, please click the Negative Numbers ppt Negative Numbers Examples ppt tab.

"Negative Number Examples" Negative Number PPT Courseware 2:

"Negative Number Examples" Negative Numbers PPT Courseware 2 1. Review old knowledge and introduce new lessons 1. Read out the following numbers and talk about which numbers are positive and which are negative. 2. Please take notes. (1) If Xiaohua’s family’s monthly income of 2,500 yuan is recorded as +2,500, then his family’s monthly income...

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Update Time: 2024-11-22

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

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