Mathematics lesson plan for large classes: The difference between a ball and a circle

This "Mathematics Lesson Plan for Large Classes: The Difference between a Sphere and a Circle" was compiled by Kao.com for everyone. I hope it will be helpful to everyone. The following information is for reference only! ! !

Activity goals

1. Be able to name the sphere and know the shape characteristics of the sphere, that is, the sphere is round no matter which direction it is viewed from, and it can Turn.

2. Develop children’s observation and spatial imagination abilities.

Activity preparation

1. ppt courseware: balls and circles

2. Table tennis balls, discs of paper, and cylinder manipulation materials for children to observe.

Activity process

1. Observe and compare “balls and circles”.

1. Courseware Demonstration: Balls and Circles

Children, look at what is in the picture?

(Ball, table tennis)

Look at what is on this picture again?

(Disk, circular pattern)

2. Ask the children to take the table tennis ball from top (bottom) to front ( Look at the shape of the table tennis ball from the back) side, left (right) side and other directions.

Ask the children to observe and answer.

Summary: A table tennis ball is round when viewed from all directions.

3. Ask the children to take the round paper and compare the difference between the round paper and the table tennis ball to learn more about the characteristics of the sphere.

Guide the children to look at the round paper from all directions. When viewed from the side, it looks like a line. The children observe and answer.

2. Feel the sphere through operation.

1. Put the ball on the table and let the children play with the ball.

Be careful not to let the ball leave the table, and guide the children to roll the ball forward (back), left (right) and other directions.

2. Inspire young children to know that the ball can roll in all directions.

Summary: The external characteristics of a sphere are round when viewed from all directions and can roll in all directions. This shape is called a sphere.

3. Find the sphere

1. Courseware demonstration

Find which sphere is the sphere and why?

Let the children talk to each other. .

2. Find what objects are in the shape of a sphere?

Ask the children to think about and find what objects in daily life are in the shape of a sphere?

Talk about it Why should it be made into a sphere shape?