"Mathematics in Paper-cutting" PPT courseware 4

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"Mathematics in Paper-cutting" PPT courseware 4

1. Situation introduction

It took 1 meter of wool to make 4 pasted paintings.

How many meters of yarn do you use on average for each painting?

It took 3 discs to make 4 pasted paintings.

On average, how many discs are used in each painting?

What mathematical information can you learn from the graph?

What math questions can you ask?

2. Cooperation and exploration

How many meters of yarn do you use on average for each painting?

1÷4 =1/4 (meter)

3÷4 =3/4 (pieces)

Dividend ÷ Divisor =_____ (numerator)

a÷b=a/b

Discussion: Can a and b be any numbers?

3. Independent practice

1. (1) Divide a 1-meter-long colored rope into 3 equal parts, each part is ( ) meters long.

(2) Divide two 1-meter-long colorful ropes into 3 equal parts. Each part is ( ) meters ( ) meters, which is ( ) meters.

2. Fill in the appropriate numbers in the brackets.

3. Use fractions to express the quotient of each question. If it can be turned into a mixed number, it should be turned into a mixed number.

2÷9=

30÷19=

8÷11=

13÷8=

4. Fill it out.

Can other non-zero natural numbers be converted into improper fractions whose denominators are 1, 2, 3...?

5. Fill in the appropriate scores in the brackets.

(1) The perimeter of a square is 3 decimeters, and its side length is ( ) decimeters.

(2) Xiaohua walks 2 kilometers in 15 minutes. He averages ( ) kilometers per minute.

(3) Cut the 3-meter-long wire into 7 sections on average, each section is ( ) meters long.

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"Mathematics in Paper-cutting" PPT courseware 5:

"Mathematics in Paper-cutting" PPT courseware 5 1. Situation introduction From the picture, what mathematical information do you know? What questions can you ask based on this information? What fraction of this paper was used to cut the carp and butterfly? Cutting butterflies uses more paper than cutting carps...

"Mathematics in Paper-cutting" PPT courseware 3:

"Mathematics in Paper-cutting" PPT courseware 3 1. Situation introduction The paper-cut work is 3 decimeters long and 2 decimeters wide. It is arranged into a square display board. How many decimeters can the side length of the square display board be? How many decimeters can be the shortest? What mathematical information do you know from the picture? According to this...

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Update Time: 2024-11-23

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

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