"Preliminary understanding of division formulas and division signs" PPT courseware on division in tables

Description

"Preliminary understanding of division formulas and division signs" PPT courseware on division in tables

teaching objectives

1. Combined with specific examples, experience the process of abstracting the result of "average score" into a division expression.

2. Preliminarily understand the meaning of division, recognize the division sign, be able to read and write division equations, and be able to write division equations based on the results of operations and divisions.

3. Encourage students to actively participate in mathematical activities and initially understand the relationship between division and average scores.

Arrange 8 apples evenly on 2 plates.

What does "spread evenly between 2 plates" mean?

Putting 8 apples equally on 2 plates means that there are the same number of apples on the 2 plates.

Divide something into several equal parts like this, and find out how many parts it is. This is an average problem, and it needs to be expressed by division.

The division sign indicates the average score. When writing the division sign, first draw a line with one point above and one point below. The horizontal line should be straight and the two points should be aligned.

practice

1. First, make some moves with your hands, and then list the formulas.

(1) Divide the 10 pieces into 2 equal parts, each with () pieces.

10÷2＝5(pieces)

(2) Divide the 10 pieces into 5 equal parts, each with () pieces.

10÷5＝2 (pieces)

2. Divide the 15 fishes equally among the 3 kittens, each kitten gets () fish.

15÷3=5

What about dividing it equally among the 5 kittens?

15÷5=3

3. (1) If these flowers are placed evenly in 2 vases, put ( ) branches in each vase.

(2) If these flowers are placed in 4 vases on average, put ( ) branches in each vase.

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For more information about the PPT courseware "Division in Tables, Preliminary Understanding of Division Formulas and Division Signs", please click the "Division in Tables ppt, Preliminary Understanding of Division Arithmetic and Division Signs" ppt tag.

File Info

Update Time: 2024-10-11

This template belongs to Mathematics courseware Hebei Education Edition Second Grade Mathematics Volume 1 industry PPT template

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