"Ordered Number Pairs" Plane Cartesian Coordinate System PPT Courseware

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"Ordered Number Pairs" Plane Cartesian Coordinate System PPT Courseware

Think about it, talk about it

In the same way, can you tell me the location of your best friend?

(1) How to find the location indicated on the movie ticket in the cinema?

(2) On a movie ticket, what is the difference in meaning between "No. 9 in row 7" and "No. 7 in row 9"?

Do it

"Monster Pac-Man" is a computer game. The ● mark in the picture indicates the locations that the "monster" has passed successively. If (1,2) is used to indicate the second location that the "monster" has passed, then you can use In the same way, can you express several other locations that the "monster" passes through in the picture?

Enlightenment and reflection

What other ways are there to determine location in life?

(1) If the whole class stands in a row doing morning exercises, and now the teacher wants to find a certain classmate, does he still need to use 2 data?

(2) Is it enough to use two data to determine the seat location in a multi-story cinema?

There must be three data (a, b, c), where a represents the number of floors, b represents the row number, and c represents the seat number, that is, "a floor, b row, c number".

(3) There must be four data to determine the location of the residents in the community, namely building number a, unit number b, floor number c and household number d, that is, "number d on floor c of unit b in building a."

(4) Regional positioning method: Draw the area code such as B3, D5, etc. The position of the players on the court during the volleyball match, etc.

main content

①The concept of ordered number pairs;

② A point in the plane can be represented by an ordered number pair, recorded as (a, b);

③Ordered number pairs can be used to represent practical problems;

④ Various patterns can be drawn using ordered number pairs.

a means: row, column, latitude, angle...

b means: number, row, longitude, distance...

Job design

1. Design a graph that is easy to describe using pairs of ordered numbers, and then tell your classmates about these pairs of ordered numbers to see if others can draw your graph.

2. Based on the actual situation of our school, please use appropriate ordered number pairs to express and describe the positional relationship of each class.

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For more information about the PPT courseware "Pairs of Ordinal Numbers in Plane Cartesian Coordinate System", please click the PPT tag of Pairs of Ordinal Numbers in Plane Cartesian Coordinate System ppt.

"Using Ordinal Number Pairs to Express Positions" PPT Courseware 2:

"Using Ordinal Number Pairs to Represent Positions" PPT Courseware 2 Learning Objectives: 1. Let students experience different methods of determining the position of objects in real situations. 2. Be able to use ordered number pairs to determine the position of objects. 3. Let students feel the close connection between life and mathematics, and train students to learn mathematics..

"Using Ordinal Number Pairs to Represent Positions" PPT courseware:

"Using Ordinal Number Pairs to Express Positions" PPT Courseware Observation and Thinking Question 1: In a physical education class, if 48 people in the class stand in a line, how do you express the position of a certain student? Question 2: If the students are arranged in 6 rows and 8 columns (as shown below), how to indicate the small...

"Ordered Number Pairs" Plane Cartesian Coordinate System PPT Courseware 3:

"Ordered Number Pairs" Plane Cartesian Coordinate System PPT Courseware 3 Students self-study textbook P39-40 Think about the following content and try to answer the following questions: What is an ordered number pair? What are the uses of ordinal number pairs? A pair of numbers a and b consisting of two numbers a and b in order is called an ordered number pair...

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Update Time: 2024-11-19

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

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