Cube courseware Volume 2 of grade 5 mathematics

The following Ruiwen net small editor for you to sort out the fifth grade mathematics volume II "Cube" courseware.

[teaching content] PEP primary school mathematics grade 5 Volume 2, page 20.

[textbook analysis] the textbook abstracts the characteristics of cube by observing the objects of cube, and points out that cube is a three-dimensional figure surrounded by six identical squares. By comparing the similarities and differences between cuboids and cubes, it is shown that cubes can be regarded as cuboids with equal length, width and height, and their relationship is represented by set graph. The comparison can be carried out according to the order of faces, edges and vertices. After the arrangement, the teacher uses the set diagram to explain the relationship between the box and the cube.

** [teaching objectives]**

1. Through observation and operation and other teaching activities, make students understand the cube and master the characteristics of cube.

2. Through observation and comparison, the relationship and difference between cuboid and cube are clarified.

3. Through learning activities, cultivate students' operational ability and develop their innovative consciousness and space concept.

The characteristics of cuboid and the similarities and differences between long cube and cube.

[teaching difficulties] understand the relationship between cuboids and cubes.

[mathematical thought] inductive thinking and comparative thinking.

** [teaching process]**

** First, create situations and lead to problems**

** Teacher activities**

Student activities and goals

Take out the cuboid made in the last lesson, organize the communication, and guide the students from the three aspects of face, edge and vertex.

Reveal the topic: in this lesson, we will learn and study the characteristics of cube and write on the blackboard.

Tell me what you know about it.

[achieve the goal: by reviewing the old knowledge, students can naturally observe the features of cube from three aspects: face, edge and vertex, so as to stimulate students' interest in inquiry

** 2. Jointly explore and summarize methods**

** Teacher activities**

Student activities and goals

** First, explore the characteristics of cube.**

1. Independent observation and cooperative exploration.

(1) organize students to report the features of cube found (Tips: face, edge, vertex, shape, area and length of face)

(2) there is another name for cube, do you know?

2. Summarize by filling in the blanks.

** Second, explore the relationship between cuboid and cube**

1. Organize discussion and exchange. Guide students from the face, edge, vertex three aspects, can be compared with the list method.

2. Question: from the comparison, what is the relationship between cube and cuboid?

After discussion, it is represented by set graph.

Take out the cube objects, carefully observe the faces, edges and vertices of the cube to see what you find?

Let's talk about it and report to the class.

Cubes

Student answer: cube is a (three-dimensional) figure surrounded by (6) square (identical). A cube also has (12) edges of equal length. A cube also has (8) vertices.

[achieve the goal: let students take the initiative to use the law of transfer, through the collaborative effect of a variety of senses (see, touch, number, compare, think), understand the characteristics of cube surface, edge and vertex, so as to have a more comprehensive understanding of the cube

Table work: take out a cuboid and a cube, discuss what are the similarities and differences between cuboids and cubes?

Report to the class again.

Class discussion: cuboid all the characteristics, cube has, can be said to be the length, width, height of the same cuboid, it is a special cuboid.

[achieve the goal: using the teaching strategy of progressive question asking, students should think about the relationship between cuboids and cubes. In the process of thinking, students must compare, summarize and sort out the characteristics of cuboids and cubes, so as to understand the similarities and differences and relations between cuboids and cubes, and infiltrate inductive and comparative thinking.]

** Third, use methods to solve problems**

** Teacher activities**

Student activities and goals

20 pages of the textbook "do it": Inspection and guidance, organization and communication.

Work together, discuss, report and exchange£¨ Important: at least 8 small cubes are needed to build a slightly larger cube.)

** Fourth, feedback consolidation, layered practice**