"Project Learning: Making Three-dimensional Models" Projection and View PPT Teaching Courseware

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"Project Learning: Making Three-dimensional Models" Projection and View PPT Teaching Courseware

Part 1: Introduction to the problem

Question 1 ⑴The expanded view of the cylinder is _________.

⑵The expansion diagram of a regular tetrahedron is ________ regular triangles.

⑶The following four plane figures can be folded into a cube ( )

Question 2 ⑷ Based on the three views of the following three-dimensional figure, judge that this three-dimensional figure is ________, and try to make a three-dimensional model.

Question 3 The following is a bearing of a certain machine and its three-dimensional view. Do you know how the master worker uses the three-dimensional view of the bearing to manufacture this kind of bearing?

Question 4 Using cardboard as the main raw material, make three-dimensional models represented by the following two sets of views:

Question 1: From the three views, what data need to be measured to draw each side of the three-dimensional figure?

Question 5 Use potatoes (or radishes) as raw materials and make the corresponding physical model according to the two sets of views given below:

Question 6 Each of the following set of plane figures consists of four equilateral triangles.

(1) Point out which of them can be folded into polyhedrons? Trace the above graphics on paper, cut them out, stack them up, and verify your answers;

(2) Draw three views of the polyhedron that can be folded from the above figure, and point out how the three views reflect "the length is aligned, the height is equal, and the width is equal"?

(3) If the side length of the small triangle in the picture above is 1, what are the volume and surface area of ​​the corresponding polyhedron?

Project learning to make three-dimensional model PPT, the second part: project expansion

Three-dimensional views and expanded views are two-dimensional graphics related to three-dimensional figures. Use after-school practice to observe and understand or search online to understand. Combined with our daily life and specific examples, write a short article to introduce the application of three-dimensional views and expanded views, and How you feel.

Topic learning to make three-dimensional model PPT, the third part of the content: Class summary

What are your thoughts and gains from studying the topics in this class?

(1) Mathematics is a science with quantitative relationships and spatial forms as its main research objects. Quantitative relationships and spatial forms are abstracted from the real world. It is obvious that knowledge about projections and views arises from practical needs (architecture, manufacturing, etc.) and is very closely related to the actual model.

(2) Perceptual knowledge needs to be upgraded to rational knowledge, and practice under the guidance of theory will be more clear and effective.

(3) From a technical point of view, understanding the relationship between plane graphics and three-dimensional graphics will help realize the mutual transformation between them as needed, that is, learn to draw three-dimensional figures and derive three-dimensional figures from three views. In terms of ability, understanding the connection between two-dimensional graphics and three-dimensional graphics is very important for cultivating spatial imagination ability.

Topic learning to make three-dimensional model PPT, the fourth part: extracurricular homework

1. Fill in the blanks

(1) The geometric solid that is a circle when viewed from above is _______, ______.

(2) When drawing a view, the visible contours are usually drawn as _______, and the invisible parts are usually drawn as _______.

(3) Give two examples of objects whose left view is a triangle: ________, _______.

2. The figure shown in the figure is a three-view view of a polyhedron. Please name the polyhedron according to the views.

3. As shown in the figure below, based on the three views of the object, find the volume of the geometry it represents and make its three-dimensional model.

Keywords: Free download of PPT courseware for mathematics in the second volume of the ninth grade of the People's Education Press, download of project learning three-dimensional model PPT, download of projection and view PPT, .PPT format;

For more information about the PPT courseware "Projection and View Project Learning to Make Three-dimensional Models", please click the Projection and View PPT Project Learning to Make Three-dimensional Models PPT tag.

"Project Learning: Making Three-dimensional Models" Projection and View PPT Premium Courseware:

"Project Learning to Make Three-dimensional Models" Projection and View PPT Premium Courseware Part One Content: Learning Objectives 1. Further deepen the understanding of projection and view knowledge in practical hands-on practice. 2. Understand the role of using three views to represent three-dimensional figures, and further experience three-dimensional figures ..

"Project Learning: Making Three-dimensional Models" Projection and View PPT Free Download:

"Project Learning to Make Three-dimensional Models" Free Download of Projection and View PPT Part One: Knowledge Points 1. Make a three-dimensional model from three views 2. Make a three-dimensional model from expanded views... ... Project Learning to Make Three-dimensional Models PPT , Part Two: New...

"Project Learning: Making Three-dimensional Models" Projection and View PPT Free Courseware:

"Project Learning: Making Three-dimensional Models" Projection and View PPT Free Courseware Part One: Introduction of New Knowledge In order to study chemical substances, scientists create three-dimensional models of material molecules. The Bird's Nest, the main stadium of the 2008 Beijing Olympic Games, the National Aquatics Center Water Cube..

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Update Time: 2024-10-29

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

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