"Understanding of Cuboids and Cubes" Cuboids and Cubes PPT Courseware 3

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"Understanding of Cuboids and Cubes" Cuboids and Cubes PPT Courseware 3

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"Understanding of Cuboids and Cubes" Cuboids and Cubes PPT Courseware 3

teaching objectives

By putting pendulums together, find out the rules and summarize the volume formula.

Can use formulas to correctly calculate the volume of cuboids and cubes.

Cultivate students' thinking quality of active thinking and exploring new knowledge.

discuss:

1. How many faces does a cuboid have? What is the relationship between the position and size of the surface?

2. How many edges does a cuboid have? What is the relationship between the position and length of the ribs?

3. How many tops does a cuboid have?

practise:

1. Fill in the blanks orally based on the data in the figure: Figure 1: The length of the cuboid is ( ) centimeters, the width ( ) centimeters, and the height ( ) centimeters. The sum of the lengths of the 12 edges is ( ) centimeters.

Figure 2: The geometric solid in this picture is ( ), and the sum of the 12 edge lengths is ( ) decimeter.

Figure 3: A cuboid whose length, width, and height are 9 cm, 3 cm, and 2.5 cm respectively. The length on it is ( ) centimeters, the width is ( ) centimeters, the length of the left side is ( ) centimeters, and the width is ( ) centimeters. The sum of the lengths of the three edges that intersect at a vertex is ( ) centimeters.

2. Judgment. If the correct answer is correct, please put "√" in the bracket, and if the incorrect answer is incorrect, please put "×" in the bracket.

(1) The six faces of a cuboid must be rectangles; ( )

(2) The areas of the six faces of the cube must be equal; ( )

(3) A cuboid (non-cube) has at most four faces with equal areas; ( )

(4) A cuboid with three equal edges intersecting at a vertex must be a cube. ( )

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For more information about the PPT courseware "Understanding of cuboids and cubes, cuboids and cubes", please click the "Understanding of cuboids and cubes ppt" ppt tag.

"Understanding of Cuboids and Cubes" Cuboids and Cubes PPT Courseware 5:

"Understanding of Cuboids and Cubes" Cuboids and Cubes PPT Courseware 5 Teaching Objectives 1. To enable students to understand the meaning of the faces, edges, vertices and length, width and height (edge ​​length) of cuboids and cubes through observation, operation and other activities, and master the meaning of cuboids and cubes Characteristics of the cube. ..

"Understanding of Cuboids and Cubes" Cuboids and Cubes PPT Courseware 4:

"Understanding of Cuboids and Cubes" PPT Courseware of Cuboids and Cubes 4 What is the relationship between cuboids and cubes? A cube is a ____ with equal length, width and height. It is a special kind of ______. What are the characteristics of a cube? Faces: There are 6 faces, all identical..

"Calculation of the volume of cuboids and cubes" PPT courseware for understanding cuboids and cubes 2:

"Calculation of the Volume of Cuboids and Cubes" Understanding of Cuboids and Cubes PPT Courseware 2 Teaching Objectives 1. Explore and master the calculation methods of the volumes of cuboids and cubes, and be able to correctly calculate the volumes of cuboids and cubes. 2. In the process of observation, operation and exploration...

File Info

Update Time: 2024-10-25

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