"Plane Cartesian Coordinate System" PPT

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"Plane Cartesian Coordinate System" PPT

Part 1: How to determine the position of a point on a straight line?

A point on the number axis can be represented by a number, which is called the coordinate of the point on the number axis. For example, the coordinate of point A on the number axis is -3, and the coordinate of point B on the number axis is 2. Conversely, knowing the coordinates of a point on the number axis, the position of this point on the number axis is also determined.

Read the textbook and answer the following questions:

It consists of two number axes on the plane that are perpendicular to each other and have a common origin.

Plane rectangular coordinate system, the horizontal number axis is called the x-axis (horizontal axis),

Orientation to the right is the positive direction, and the vertical axis is called the y-axis (vertical axis).

Orientation is the positive direction. The intersection of the two coordinate axes is the origin of the plane rectangular coordinate system.

Plane Cartesian Coordinate System PPT, Part 2: Coordinates and Points

1. Find coordinates from points:

How to express the position of point A:

Draw a perpendicular to the x-axis through point A, with the perpendicular foot facing the x-axis

The corresponding number is 4, which is the abscissa of point A.

Draw a perpendicular to the y-axis through point A, with the vertical foot opposite the y-axis

The corresponding number is 3, which is the ordinate of point A.

The ordered number pair (4, 3) is the coordinate of point A.

2. Find points by coordinates

How to find points by coordinates:

First find the points representing the abscissa and ordinate, and then draw perpendiculars to the x-axis and y-axis through these two points. The intersection of the perpendiculars is the point corresponding to the coordinates.

Plane Cartesian Coordinate System PPT, Part 3: Harvest Exploration

What did you gain from today’s study?

1. Concepts related to plane rectangular coordinate system;

2. Establish a plane rectangular coordinate system;

3. Write the coordinates from the points and find the points from the coordinates;

Operation:

1. Questions 1 and 2 on page 37 of the textbook (written in the book)

2. Workbook: Question 3 on page 37 of the textbook

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"Plane Cartesian Coordinate System" PPT courseware download:

"Plane Cartesian Coordinate System" PPT courseware download Part One: Introduction of new lesson The picture below is a schematic diagram of a tourist attraction in a certain city. 1. How did you determine the location of each attraction? 2. How many squares are there in the west and south of the central square for Dacheng Hall? Forest of Steles in the Central Square...

"Plane Cartesian Coordinate System" PPT download:

"Plane Cartesian Coordinate System" PPT download part one content: Learning objectives: 1. Understand and be able to draw a plane Cartesian coordinate system, be able to establish a plane Cartesian coordinate system according to the needs of the graphics to be represented, and use coordinates to represent points on the graphics. 2 .at right angles to a given plane..

"Plane Cartesian Coordinate System" PPT courseware 7:

"Plane Cartesian Coordinate System" PPT Courseware 7 Knowledge Review: What is a number axis? Specifying the origin, positive direction, and unit length on a straight line constitutes a number axis. A point on the number axis can be represented by a number. This number is called the coordinate of the point. For example, point A on the number axis...

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Update Time: 2024-09-17

This template belongs to Mathematics courseware Hebei Education Edition Eighth Grade Mathematics Volume 2 industry PPT template

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