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Authoritative PPT Summary
"Expand and Fold" Cuboid PPT Courseware
teaching objectives
1. Combined with the specific unfolding and folding scenarios of cuboids and cubes, experience the process of exploring the relative positions of the six surfaces of cuboids and cubes, and be able to accurately grasp the unfolding and folding of the six surfaces of cuboids and cubes.
2. Be able to recognize cuboids and cubes, and have preliminary three-dimensional space imagination ability.
In the picture on the right, an additional surface needs to be added before it can be folded to form a cube. The following is the completion of the painting by four students (the shaded part in the picture). The correct one is ( )
As shown in the figure, this is an expanded view of a cube. If it is formed into the original cube, which points coincide with point P.
The picture below is an expanded view of a cube. The side marked with the letter A is the front of the cube. If the values of the algebraic expressions marked on the left and right sides of the cube are equal, find the value of x.
There is a cube with six colors painted on each side: white, red, yellow, blue, green and black. Three students A, B, and C observed the cube from three different angles. The results are as shown below. What is the color of the opposite side of each face of the cube?
There is a cube wooden block with numbers 1 to 6 marked on its six sides respectively. The figure below shows the numbers observed from different sides of the cube wooden block. What are the numbers opposite the numbers 1 and 5?
Think about it: The following figures are expanded diagrams of some common geometric entities. Can you correctly name the names of these geometric entities?
Summary of this lesson
Through this lesson, we have fully understood the cuboid and the cube, and know the various aspects of the cuboid and the cube. This is the focus and difficulty of this lesson. In life, we often see various cuboids and cubes. After class, we should pay attention to observe and see which figures around us are cuboids or cubes.
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"Expand and Fold" Rich Graphic World PPT Courseware 4:
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"Expand and Fold" Rich Graphic World PPT Courseware 3:
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