"Surface Area of a Cylinder" Cylinder and Cone PPT Courseware 7

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Western Normal University Edition Sixth Grade Mathematics Volume 2	pptx	6 MB

"Surface Area of a Cylinder" Cylinder and Cone PPT Courseware 7

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Upload Time: 2024-11-25

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Description

"Surface Area of a Cylinder" Cylinder and Cone PPT Courseware 7

teaching objectives

1. Understand the meaning of lateral area and surface area of a cylinder.

2. Understand how to calculate the lateral area and surface area of a cylinder.

3． Be able to flexibly use the relevant knowledge of surface area and side area to solve some practical problems.

Calculate the circumference and area of the circle below.

(1)d=6cm

Circumference: 6×3.14=18.84 (cm)

Area: (6÷2)²×3.14＝28.26 (cm²)

(2) r＝5dm

Circumference: 2×5×3.14=31.4 (cm)

Area: 5²×3.14＝78.5 (cm²)

A quick test:

① Use a rectangular piece of paper 8cm long and 5cm wide to form a cylinder. The side area of this cylinder is ( ) cm².

② For a 10-meter-long cylindrical drainage steel pipe, the radius of the cross-section circle measured is 0.2 meters. If anti-rust paint is sprayed on the surface of the steel pipe, the spray-painted area is ( ) square meters.

Innovation and practice:

Apply the knowledge you have learned in this class and combine it with practical problems in life. Can you write an application question that you think is reasonable and communicate with your classmates.

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For more information about the "Surface Area of a Cylinder Cylinder and Cone" PPT courseware, please click the "Surface Area of a Cylinder ppt Cylinder and Cone ppt" tag.

"Surface Area of a Cylinder" PPT download:

"Surface Area of a Cylinder" PPT Download Part One: New Lesson Analysis A cylindrical iron bucket without a lid (as shown below). (1) How many square centimeters of iron sheet should be used to make this bucket? 3.143035=3297 (square centimeters) 3.14 (302)2=706.5..

"Surface Area of a Cylinder" PPT courseware:

"Surface Area of a Cylinder" PPT Courseware Part One: Collaborative Exploration There are countless heights of a cylinder, and the lengths of the heights are all equal. Cooperation and communication in a group of four people: ① What shape is there when the side of the cylinder is expanded along the height? ②Which does the length and width of the expanded figure correspond to that of the cylinder?

"Surface Area of a Cylinder" PPT:

"Surface Area of a Cylinder" PPT Part One Content: Teaching Objectives 1. Be able to flexibly use the calculation method of the surface area of a cylinder to solve some simple problems in life according to specific situations, so that students can feel the close connection between mathematics and life. 2. Through imagination and operation Waiting for life...

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Update Time: 2024-11-25

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"Surface Area of a Cylinder" Cylinder and Cone PPT Courseware 7