"Plane Cartesian Coordinate System" Position and Coordinates PPT Courseware 6

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"Plane Cartesian Coordinate System" Position and Coordinates PPT Courseware 6

Review old knowledge

1. Definition of number axis:

A straight line specifying the origin, positive direction, and unit length is called a number axis.

2. The relationship between points on the number axis and real numbers:

There is a one-to-one correspondence between points on the number line and real numbers.

The definition of "Plane Cartesian Coordinate System":

In a plane, two mutually perpendicular number axes with a common origin form a plane rectangular coordinate system.

Cooperation and exchange

�. If you draw two mutually perpendicular number axes with the "central square" as the origin, oriented to the right and upward respectively as the positive direction, and the side length of a square is regarded as a unit length, then can you express the location of the "Forest of Steles"? Where is the location of "Dacheng Hall"?

How to establish the "Plane Cartesian Coordinate System":

(1) Establish the origin O;

(2) The right direction through point O is the positive direction, and a number axis is established at the horizontal position called the x-axis or horizontal axis;

(3) The orientation through point O is the positive direction, and a number axis is established at the vertical position called the y-axis or vertical axis.

�. The following is a schematic diagram of classroom seats. Please find the seat of "Wang Yi". Where is the seat of "Zhao Er"?

Class summary

1. Definition of "Plane Cartesian Coordinate System":

In a plane, two mutually perpendicular number axes with a common origin form a plane rectangular coordinate system.

2. How to establish the "Plane Cartesian Coordinate System":

(1) Establish the origin O;

(2) The right direction through point O is the positive direction, and a number axis is established at the horizontal position called the x-axis or horizontal axis;

(3) The orientation through point O is the positive direction, and a number axis is established at the vertical position called the y-axis or vertical axis.

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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:

"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...

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Update Time: 2024-12-01

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