"Busy Construction Site" PPT Courseware 3

Description

"Busy Construction Site" PPT Courseware 3

1. Situation introduction

The surface area of ​​the entire "Water Cube" building is 100,000 square meters.

The surface of the entire "Water Cube" building is covered with air pillows, covering an area of ​​100,000 square meters, making it the largest in the world.

What questions can you ask based on this information?

What mathematical information do you know from the picture?

2. Cooperation and exploration

How much is one hundred thousand?

1 small box of 1000 staples

1 large box of 10,000 staples

10 large boxes equals 100,000 staples.

Can you give an example of how big 100 million is?

Normally, an adult has about 100,000 hairs.

10 adults have approximately one million hairs.

There are approximately 10 million hairs on 100 adults.

There are approximately 100 million hairs on 1,000 adults.

Think about it, what are the counting units of integers?

One (one), ten, one hundred, one thousand, ten thousand, one hundred thousand, one million, ten million, billion... are all units of counting.

What does the ellipsis here mean?

3. Independent practice

1. Use a counter to count.

(1) Starting from nine thousand eight hundred, counting one hundred and one hundred, counting to ten thousand and five hundred.

(2) Starting from 970,000, counting from 11,000 to 1,110,000.

(3) Starting from thirty million, count ten million to ten million, and count to one hundred million.

(4) Starting from nine and a half million, counting by hundreds of thousands, up to ten million.

(5) Starting from 46 billion, counting billions and billions to 52 billion.

2. (1) Please imagine the scene of 100,000 spectators.

(2) Can you use numbers above ten thousand to describe things you know?

3. Extracurricular practice.

(1) Choose a bag of melon seeds, estimate how many seeds there are, and then count them.

(2) How many bags of ten thousand melon seeds are there? What about one hundred thousand pills or one million pills?

Keywords: Busy Construction Site Teaching Courseware, Qingdao Edition Fourth Grade Mathematics Volume 1 PPT Courseware Download, Fourth Grade Mathematics Slide Courseware Download, Busy Construction Site PPT Courseware Download, .PPT format;

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"Busy Construction Site" PPT Courseware 4:

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"Busy Construction Site" PPT Courseware 2:

"Busy Construction Site" PPT courseware 2 Learning objectives: 1. Understand angles and master the classification of acute angles, right angles, obtuse angles, straight angles and circumferential angles. And know the relationship between right angles, square angles and circumferential angles. 2. Be able to use a protractor to measure angles. 3. Be able to use a protractor to draw angles of specified degrees..

"Busy Construction Site" PPT courseware:

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Update Time: 2024-09-10

This template belongs to Mathematics courseware Qingdao Edition Fourth Grade Mathematics Volume 1 industry PPT template

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