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Authoritative PPT Summary
"Understanding of Cuboids" Cuboids (1) PPT Courseware (Lesson 2)
Part One: Learning Objectives
1. Further master the characteristics of cuboids and cubes. (emphasis)
2. Be able to use the characteristics of cuboids and cubes to solve some practical problems. (difficulty)
Review import
A rectangle is 8m long and 4m wide. Its perimeter is ( ) m.
The perimeter of a square with side length 6m is ( ) m.
PPT on understanding cuboids, part 2: exploring new knowledge
Knowledge points: How to assemble cuboids according to their characteristics
(1) Which of the following faces can form a cuboid? What do you think and communicate with your peers. (Unit: cm)
(2) Mark the serial number of each face you selected on the cuboid below, and mark the length, width, and height of the cuboid.
Knowledge refining
To determine whether the given graphics can form a cuboid, you can compare them group by group according to the characteristics of the faces.
Knowledge points: Calculation method of the sum of the edge lengths of cuboids and cubes
(3) The picture below shows a rectangular lantern frame. How many centimeters of wooden strips are needed to make such a frame? (Unit: cm)
(30+20+20)×4=280 (cm)
Answer: To make such a frame, at least 280 cm long wooden strips are needed.
Knowledge refining
The sum of the edge lengths of the cuboid = (length + width + height) × 4
The sum of the edge lengths of the cube = edge length × 12
PPT on the understanding of cuboids, part three: consolidation exercises
1. Fill in the table with the area of each face of the cuboid below. (Unit: cm)
2. True or false questions.
(1) A cube frame with an edge length of 6dm can be made from 48dm long iron wire. ( )
(2) The edge length of a cube is 5cm, and the area of each face is 20cm². ( )
(3) Using 4 3dm small rods, 3 7dm small rods and 4 9dm small rods, a cuboid frame with a total edge length of 69dm can be built. ( )
3. The total length of a cuboid with 12 edges is 92cm. It is known that its length is 10cm, its width is 8cm, and its height is how many centimeters?
92÷4-(10+8)＝5(cm)
Answer: The height is 5 cm.
PPT on understanding cuboids, part 4: Class summary
What knowledge have you learned in this class?
To determine whether the given graphics can form a cuboid, you can compare them group by group according to the characteristics of the faces.
The sum of the edge lengths of the cuboid = (length + width + height) × 4
The sum of the edge lengths of the cube = edge length × 12
PPT on understanding cuboids, part 5: homework
Assignment 1: Complete the exercises related to the textbook.
Assignment 2: Complete the corresponding exercises.
Keywords: Beijing Normal University edition fifth grade mathematics PPT courseware for the second volume free download, understanding of cuboid PPT download, cuboid PPT download, .PPT format;
For more information about the "Understanding of Cuboids and Cuboids" PPT courseware, please click on the PPT tag of "Understanding of Cuboids and Cuboids".
"Understanding of Cuboids" Cuboids (1) PPT Courseware (Lesson 1):
"Understanding of Cuboids" Cuboid (1) PPT Courseware (Lesson 1) Part One: Learning Objectives 1. Understand the names of the parts of cuboids and cubes, further understand cuboids and cubes, and master the characteristics of cuboids and cubes. (Key points) 2. Be able to correctly distinguish...
"Understanding of Cuboids" Cuboid (1) PPT (Lesson 2):
"Understanding of Cuboids" Cuboid (1) PPT (Lesson 2) Part One: Learning Objectives 1. Understand and master what kind of faces can form a cuboid or cube through observation, operation and other activities, and understand the relationship between them. 2. Further accumulate through cooperative learning..
"Understanding of Cuboids" Cuboid (1) PPT (Lesson 1):
"Understanding of Cuboids" Cuboids (1) PPT (Lesson 1) Part One: Learning Objectives 1. Understand cuboids and cubes through observation, operation and other activities, master the basic characteristics of cuboids and cubes, and understand the relationship between them. 2. Let students do...