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Authoritative PPT Summary
"Surface Area of a Cylinder" PPT
Part One: Teaching Objectives
1. Be able to flexibly use the calculation method of cylinder surface area 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 activities such as imagination and operation, you can learn that the sides of a cylinder can be expanded into a rectangle, deepen your understanding of the characteristics of a cylinder, and develop spatial concepts.
3. Combining specific situations and hands-on operations, explore the calculation method of the side area of a cylinder, master the calculation methods of the side area and surface area of a cylinder, and be able to correctly calculate the side area and surface area of a cylinder.
Surface area of cylinder PPT, part 2 content: analysis of new lesson
What is the minimum area of cardboard needed to make a cylindrical carton? (Interface is not included)
This is the required surface area of the cylinder.
The base area of a cylinder is easy to find, but how to find the side area of the cylinder?
The sides of the cylinder unfold into a rectangle.
1. There are two bases: the areas are equal.
2. One side: length = circumference of bottom surface
The length of the rectangle = the circumference of the base of the cylinder
Width of rectangle = height of cylinder
Side area of cylinder = perimeter of base × height
S side=Ch
Surface area of cylinder PPT, part 3 content: after-class exercises
Make a cylindrical iron bucket without a lid, the height is 5 decimeters. The bottom diameter is 4 decimeters. What is the minimum area of iron sheet required?
The bucket has no lid, which means it has only one bottom.
(1) Side area of the bucket: 3.14 × 4 × 5 = 62.8 (square decimeters)
(2) The bottom area of the bucket: 3.14 × (4÷2) 2=12.56 (square decimeters)
(3) Iron sheet is required: 62.8+12.56=75.36 (square decimeters)
Keywords: Free download of Hebei Education Edition mathematics PPT courseware for sixth grade volume 2, surface area of cylinder PPT download, .PPT format;
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"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" Cylinder and Cone PPT Courseware 7:
"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...