"Translation" graphics movement PPT

Description

"Translation" graphics movement PPT

Part One: Learning Objectives

1. Further understand the translation of graphics and explore the properties of translation. (emphasis)

2. Able to draw translated graphics of simple graphics as required. (difficulty)

Panning PPT, part 2: review import

Fill it out.

(1) A car driving on a straight road is a ( ) phenomenon; pulling a drawer is a ( ) phenomenon.

(2) Steps to draw the translated graph:

①Find the ( ) of the original graphic;

② Outline the translation of each group of points as required ( );

③ Connect each ( ) in sequence according to the reason.

Panning PPT, part two: exploring new knowledge

Knowledge point 1: Draw the translated graph on graph paper and correctly determine the direction and distance of the graph’s translation.

What is translation?

The phenomenon of an object or figure moving along a straight line is called translation.

What are the characteristics of translation?

When an object is translated, its shape, size, and direction do not change, only its position changes.

How does the graph change before and after translation?

When an object is translated, its shape, size, and direction do not change, only its position changes.

Knowledge refining

1. How to draw the translated graph on graph paper:

(1) Find the key points of the original graphic.

(2) Each key point is translated as required.

(3) Connect each key point after translation in turn.

2. How to determine the direction and distance of the translation of the graphics on the graph paper:

(1) Determine the direction of translation according to the arrow pointing.

(2) Find a set of corresponding points of the two graphics before and after the translation. The number of grids between the corresponding points is the number of grids of the graphics translation.

Knowledge point 2: Use translation to find the perimeter and area of ​​irregular figures

What is the area of ​​the figure below?

Think about it, how should you find the area of ​​this figure?

We can cut off the semicircle on the left and translate it 6 spaces to the right.

This becomes a rectangle, which is 6cm long and 4cm wide.

The area is 6×4=24 (cm2).

Knowledge refining

Observe the characteristics of graphics and use the properties of translation to transform irregular graphics into regular graphics and then solve the problem.

Panning PPT, Part 3: Consolidation Practice

1. Color the result obtained after moving 4 spaces to the right.

2. What fraction of the entire graphic does the colored part account for?

3. Think about how to calculate the perimeter of the figure below.

4. Calculate the area of ​​the figure below. (The side length of each square is 1cm)

5. Compare the area of ​​the shaded areas in the two pictures below.

Panning PPT, Part 4: Class Summary

What knowledge have you learned in this class?

1. How to draw the translated graph on graph paper:

(1) Find the key points of the original graphic.

(2) Each key point is translated as required.

(3) Connect each key point after translation in turn.

2. How to determine the direction and distance of the translation of the graphics on the graph paper:

(1) Determine the direction of translation according to the arrow pointing.

(2) Find a set of corresponding points of the two graphics before and after the translation. The number of grids between the corresponding points is the number of grids of the graphics translation.

3. Observe the characteristics of graphics, use the properties of translation to transform irregular graphics into regular graphics and then solve the problem.

Panning PPT, Part 5: Homework

Assignment 1: Complete the exercises related to the textbook.

Assignment 2: Complete the corresponding exercises.

Keywords: Free download of PPT courseware for mathematics in the second volume of the fourth grade of the People's Education Press, download of translation PPT, download of graphic movement PPT, .PPT format;

For more information about the "Motion and Translation of Graphics" PPT courseware, please click on the "Motion and Translation of Graphics" PPT tab.

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Update Time: 2024-10-18

This template belongs to Mathematics courseware People's Education Press Fourth Grade Mathematics Volume 2 industry PPT template

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