"Understanding of Circles" Circle PPT Courseware 2

Description

"Understanding of Circles" Circle PPT Courseware 2

teaching objectives

1. Feel and discover the relevant characteristics of a circle in activities such as observation, operation, and circle drawing, and know what the center, radius, and diameter of a circle are; be able to draw a circle with the help of tools, and use a compass to draw a circle of a specified size; be able to use the functions of a circle Knowledge explains some daily life phenomena.

2. Further accumulate learning experience in understanding graphics, enhance spatial concepts, and develop mathematical thinking during activities.

3. Further experience the connection between graphics and life, feel the learning value of flat graphics, and improve your interest in learning and confidence in learning mathematics well.

Ask the students to take out the round pieces of paper you have prepared and fold them.

Activity requirements:

(1) Fold the circular piece of paper in half so that the two parts overlap completely, open it and fold it in half again in different directions. what have you found?

(2) Share your findings with your classmates in the group.

group discussion:

(1) Observe what kind of line the crease just made is?

(2) Where are the circles at both ends of this line segment? What other characteristics does this line segment have?

(3) Discuss your ideas with classmates in the group

discuss:

1. To draw a circle with a radius of 3 cm, what should be the distance between the two legs of the compass?

2. To draw a circle with a diameter of 4 cm, what should be the distance between the two legs of the compass?

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File Info

Update Time: 2024-10-04

This template belongs to Mathematics courseware Jiangsu Education Edition Fifth Grade Mathematics Volume 2 industry PPT template

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