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"Coordinates and the Position of Figures" PPT courseware
Part One Content: 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, mathematicalize practical problems, and use the rectangular coordinate system to solve problems;
3. Be able to flexibly use multiple methods to determine the location of objects based on specific scenarios.
Coordinates and the position of graphics PPT, part 2: self-study guidance
Read P41-P42 and complete the independent preview of the tutorial plan.
(1) According to the tourist attractions distribution map, can you tell the location of each tourist attraction?
(2) How does the engineer give the command to the machine to insert the original component into the corresponding hole accurately?
Standing in the central square, can you tell the location of each tourist attraction according to this map of tourist attractions?
Use the square grid in the figure to establish an appropriate rectangular coordinate system.
Discuss
How do you think you can establish a suitable rectangular coordinate system?
There is no hard and fast model, but choosing an appropriate coordinate system can make calculations less difficult!
Coordinates and the position of graphics PPT, the third part: independent practice
Today during the summer vacation, Zanhua School organized some students to travel to Beijing. When they were about to return, the students had gathered in the central square, but Liu Qiang, Yang Bin, and Zhou Min had not arrived yet, so the teacher used his mobile phone to contact them. They faced the scenic spot The schematic diagram told their location. Liu Qiang: "I am at Wangjiang Pavilion, and the coordinates here are (200, -400)"; Yang Bin: "I am 300 meters west and 200 meters north of the central square"; Zhou Min: "I At 400 meters in the direction of 60° north by east of you.
(1) Establish a rectangular coordinate system in the figure based on Liu Qiang’s coordinates;
(2) Trace the points indicating the positions of Yang Bin and Zhou Min;
(3) Write the coordinates of Yang Bin and Zhou Min.
The position of coordinates and graphics PPT, the third part: cooperative exploration
1. As shown in the figure, it is known that the side length of square ABCD is 4.
①Establish an appropriate rectangular coordinate system and write the coordinates of each vertex.
② Can different rectangular coordinate systems be established to represent the coordinates of each vertex of the square?
③If the coordinates of point A are known to be (1, 1) and B (5, 1), can you draw a rectangular coordinate system? If so, please write down the coordinates of the other two points?
2. As shown in the figure, the side length of the equilateral triangle ABC is 6, establish an appropriate rectangular coordinate system, and write the coordinates of each vertex.
Variant expansion
1. As shown in the figure, in parallelogram ABCD, AB=2, AD=4, ∠A=60°. Please establish an appropriate rectangular coordinate system and indicate the coordinates of the four vertices at this time.
2. It is known that the side length of an equilateral triangle is, two vertices are on the y-axis, and the third vertex is on the x-axis,
⑴Draw a graph that satisfies the conditions; ⑵Write the coordinates of the three vertices.
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 Graphics" PPT:
"Coordinates and the Position of Graphics" PPT Part One: Problem Exploration To describe the coordinates of points on a graphic, can different coordinate systems also 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. You still have...