"Changes of Coordinates and Graphics" PPT courseware

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"Changes of Coordinates and Graphics" PPT courseware

Part One Content: Learning Objectives:

1. In the same rectangular coordinate system, feel the process of symmetry, expansion and contraction of figures caused by coordinate changes, and be able to derive the rules of symmetry, expansion and reduction of figures.

2. By exploring the relationship between coordinate changes of points on graphs and graph transformations, we can further understand the mathematical idea of ​​combining numbers and shapes.

Key point: In the coordinate plane, the symmetry, expansion and contraction of the graphics will change.

Difficulty: the relationship between graphics transformation and coordinate transformation.

Changes in coordinates and graphics PPT, part 2: axial symmetry

1. The ordinate remains unchanged, the abscissa is multiplied by -1 respectively, and the resulting graph is symmetrical to the original graph about the Y axis;

2. The abscissa remains unchanged, the ordinates are multiplied by -1 respectively, and the resulting graph is symmetrical to the original graph about the X-axis;

2. Central symmetry

1. Multiply both the abscissa and ordinate by -1, and the resulting graph will be symmetrical to the original graph about the center of the origin.

induction

Symmetry of graphics:

(x.y) is symmetric about the x-axis (x,-y)

(x.y) is symmetric about the y axis (-x,y)

(x.y) is symmetric about the center of the origin O (-x,-y)

symmetry:

(x, y) and (- x, y) are symmetrical about the y axis;

(x, y) and (x, - y) are symmetrical about the x axis;

(x,y)(-x, - y) is symmetric about the origin

Keywords: Free download of Hebei Education Edition mathematics PPT courseware for eighth grade volume 2, PPT download of changes in coordinates and graphics, .PPT format;

For more information about the "Changes in Coordinates and Graphics" PPT courseware, please click on the "Changes in Coordinates and Graphics" ppt tab.

"Changes of Coordinates and Graphics" PPT download:

"Changes in Coordinates and Graphics" PPT Download Part One Content: Give it a try (1) Ask students to establish a coordinate system on graph paper, trace point A (-2,-3), and translate point A 5 times to the right Unit length, get point B, mark this point on the graph, and write its coordinates; (2)..

"Changes in Coordinates and Graphics" PPT:

"Changes in Coordinates and Graphics" PPT Part One Content: Learning Objectives: 1. The manager explores the process of the relationship between point translation and point coordinate changes, and masters the coordinate change rules after point translation transformation. 2. By exploring the coordinate changes and graphic transformation of points on the graph..

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Update Time: 2024-11-19

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

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