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"Plane Cartesian Coordinate System" PPT courseware download
Part One: Introduction of New Course
The picture below is a schematic diagram of tourist attractions 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"? How many grids are there in the east and north of the "Central Square" for the Forest of Steles?
3. If the central square is set to (0, 0) and the side length of a small grid is 1, can you express the location of the "Forest of Steles"?
Plane Cartesian Coordinate System PPT, Part 2: Self-Study and Questions and Answers:
1. What is a number line? What is a plane rectangular coordinate system?
2. How to name the two coordinate axes and how to determine the direction?
3. The coordinate axis divides the plane into four parts. What are they called?
4. What are the coordinates of a point? How many parts does the coordinate of a point in the plane consist of?
4. What are the characteristics of the coordinates of points in each quadrant? What are the characteristics of the coordinates of points on the coordinate axis?
5. What quadrant does the point on the coordinate axis belong to?
Plane Cartesian Coordinate System PPT, Part 3: What is the number axis?
points on the number line and
There exists between real numbers
One-to-one correspondence. points on the axis and
There is a one-to-one relationship between real numbers.
Point A on the number axis represents the number 1. In turn, the number 1 is the position of point A. We say point 1 is the coordinate of point A on the number axis.
In the same way, it can be seen that the coordinate of point B on the number axis is -3; the coordinate of point C on the number axis is 2.5; and the coordinate of point D on the number axis is 0.
Plane Cartesian Coordinate System PPT, Part 4: Use your brain:
As shown in the figure: the ordinates of points B and C are the same.
1. What are the characteristics of the position of line segment BC?
2. What are the characteristics of the position of line segment CE?
3. What are the characteristics of the coordinates of points on the coordinate axis?
Plane Cartesian Coordinate System PPT, Part 5: Summary
1. Be able to draw the rectangular coordinate system correctly.
2. Able to find points based on coordinates in the rectangular coordinate system and obtain coordinates from points.
3. Master the characteristics of the coordinates of points on the x-axis and y-axis:
The ordinate of the point on the x-axis is 0, expressed as (x, 0)
The abscissa of the point on the y-axis is 0, expressed as (0, y)
4. When the abscissas of two points are the same and the ordinates are opposite numbers to each other, the two points are symmetrical about the X-axis; when the ordinates of the two points are the same and the abscissas are opposite numbers to each other, the two points are symmetrical about the Y-axis; When the abscissa and ordinate of two points are opposite numbers to each other, the two points are symmetrical about the origin;
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"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...
"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...