1, know all kinds of rulers, understand their uses, and develop children's observation and thinking ability.

2. Learn how to use a ruler to cultivate children's interest in measurement activities.

Activities to be prepared

1, ppt courseware: all kinds of rulers

Every child has a ruler.

workpiece process

First, know all kinds of rulers.

1, courseware: all kinds of rulers

(1) Please introduce the ruler you know to the children.

Ask what ruler it is called, what characteristics and uses it has.

(2) Teachers explain the characteristics of various rulers.

2. Discussion and communication

Let the children talk about interesting and special rulers.

3. Guide children to sum up what kind of ruler they have and what use they have.

Second, compare the similarities and differences of rulers.

1, find the ruler difference.

(1) Are all these rulers the same? What is the difference?

(Individual children speak, others add. )

(2) Guide children to summarize from different aspects such as use, material and shape.

2. Find out the similarities of rulers.

The differences between rulers are so great. Are there any similarities?

Summary: There are scales on it, which are tools for measuring the length of objects.

Third, measurement activities.

1, learn the method of measuring length.

(1) Let the children take out their own rulers and try to measure the length of the table.

(measured by your own feet. )

(2) Let the children talk about how it was measured.

(3) Methods to guide children to measure the length of abstract:

When measuring, the ruler should aim at the starting point of the measured object, and each ruler should be marked.

Then one end of the measuring ruler should be aligned with the mark, remember how many feet you have measured, and don't miss meters.

Can't count too much, the final measurement result is the length of the object.

2. Actual measurement: Measure the length of the desk (120cm).

(1) The child measures with his own ruler.

(Let the children measure repeatedly and tell the measured distance. )

(2) Discussion: Why do you measure the desk length with different numbers?

Summary: Rulers are different in length, so the measured results are different.

(3) The teacher helps the child measure the length of the desk (120cm).

Activity expansion

Put all kinds of rulers in the activity area for children to choose from.