"Coordinates and the Position of Graphics" PPT

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"Coordinates and the Position of Graphics" PPT

Part One: Problem Exploration

To describe the coordinates of points on a graph, can different coordinate systems be established?

Think about the contents of the self-study textbook:

1. What are the advantages of each of the two methods given in the textbook?

2. Do you have any other methods? Communicate with classmates and talk about their own ideas.

Do it

In isosceles triangle ABC, the waist

AB=AC=2√10, bottom BC=4,

(1) Please establish an appropriate coordinate system in the grid diagram and write the coordinates of A, B, and C.

(2) Explain the reason why you chose this coordinate system.

Coordinates and the position of graphics PPT, part 2: Common methods of establishing a coordinate system

What are the commonly used methods to establish a coordinate system?

(1) Take a known point on the graph or the midpoint of the line segment as the origin;

(2) Take the straight line where a certain line segment on the graph is located as the x-axis (or y-axis);

(3) Utilize the axial symmetry of the graph and take the symmetry axis as the x-axis (or y-axis).

Coordinates and the position of graphics PPT, part 3: You can do it

1. The two sides of a rectangle are 8 and 4 respectively. Establish the coordinate system as shown in the figure. Which of the following points is not on the rectangle ( )

A (8,0) B (8,4)

C (4, 0) D (0, 4)

2. There are Naval School and Huatian Supermarket in the plane. If a rectangular coordinate system is established with the Naval School as the origin, the coordinates of Huatian Supermarket are (2, 4); if a rectangular coordinate system is established with Huatian Supermarket as the origin, the Naval School The coordinates are ( )

A (2, 4) B (-2, 4) C (2, -4) D (-2, -4)

Coordinates and the position of graphics PPT, Part 4 content: Classroom harvest

Tell me what you learned from this class?

1. Establish an appropriate rectangular coordinate system according to the graphics characteristics and actual needs.

2. Commonly used methods to establish a coordinate system are:

(1) Take a known point on the graph or the midpoint of the line segment as the origin;

(2) Take the straight line where a certain line segment on the graph is located as the x-axis (or y-axis);

(3) Utilize the axial symmetry of the graph and take the symmetry axis as the x-axis (or y-axis).

Operation:

1. Read the textbook and do exercises 1 and 2;

2. Design a pattern you like (flowers, small animals, etc.) on graph paper, establish an appropriate rectangular coordinate system, and write down the coordinates of key points in the pattern (affecting the shape and position of the pattern).

Keywords: Free download of Hebei Education Edition mathematics PPT courseware for the second volume of eighth grade, coordinates and the position of graphics PPT download, .PPT format;

For more information about the "Position of Coordinates and Graphics" PPT courseware, please click the "Position of Coordinates and Graphics" ppt tab.

"Coordinates and the Position of Graphics" PPT download:

"Coordinates and the Position of Graphics" PPT Download Part One Content: Learning Objectives: 1. Be able to flexibly establish an appropriate rectangular coordinate system according to the characteristics of graphics and the needs of the problem. 2. Experience the combination of numbers and shapes through the process of establishing a plane rectangular coordinate system thoughts, feelings...

"Coordinates and the Position of Figures" PPT courseware:

The content of the first part of the PPT courseware "Coordinates and Graphics Positions": Learning objectives: 1. Understand the method of determining the position in the actual model, and be able to correctly draw the plane rectangular coordinate system; 2. Be able to establish an appropriate rectangular coordinate system and mathematically solve practical problems ization, and will use rectangular coordinates..

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Update Time: 2024-10-24

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

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