"Understanding Square Kilometers" Land Area PPT Courseware

Description

"Understanding Square Kilometers" Land Area PPT Courseware

teaching objectives

1. Combined with specific examples, experience the process of understanding the land area units "hectare" and "square meter" and the relationship between them.

2. Understand that "hectare" is a special unit for measuring land area. Knowing that l hectare = 10,000 square meters will solve simple problems related to hectares.

3. Be curious about things related to land area and gain successful experience in using your own knowledge to solve problems.

Review old knowledge

1. Fill it out.

1 hectare = ( ) square meter

4 hectares = ( ) square meters

20,000 square meters = ( ) hectare

70,000 square meters = ( ) hectares

2. Fill in the appropriate unit in ( ).

The area of ​​a stamp is about 8 ( )

The area of ​​the classroom desk is about 24 ( )

The classroom floor area is about 72 ( )

The campus covers an area of ​​approximately 1( )

Read it.

The Forbidden City in Beijing is the largest palace complex in the world, covering an area of ​​approximately 0.72 square kilometers.

The China Antarctic Great Wall Station is my country's first Antarctic scientific expedition base. It was built in 1985 and covers an area of ​​approximately 2.52 square kilometers.

The World Natural Heritage - Jiuzhaigou Valley in Sichuan covers an area of ​​approximately 720 square kilometers.

After the completion of the Three Gorges Project, the area of ​​the reservoir formed by the dam interception will be approximately 1,000 square kilometers.

"Square kilometers" is an area unit larger than "hectares". When measuring and calculating large areas of land, square kilometers are usually used as the unit.

Trial test

1. Do the math: 1 square kilometer is approximately equal to how many classrooms we have? (calculate using calculator)

2. Discuss and communicate in groups, tell us how you feel about 1 square kilometer?

practice

1. Fill in the blanks.

The Forbidden City in Beijing is the largest palace complex in the world, covering an area of ​​approximately 0.72 square kilometers.

(1) The Forbidden City in Beijing covers an area of ​​approximately ( ) hectares, equivalent to ( ) square meters.

(2) The China Antarctic Great Wall Station covers an area of ​​approximately ( ) hectares, equivalent to ( ) square meters.

2. Rewrite the land area of ​​the Beijing-Tianjin "Green Olympics" wind and sand control project below into "square kilometers" as the unit.

10,700,000 hectares = 107,000 square kilometers

7,300,000 hectares = 73,000 square kilometers

3. Rewrite the following numbers into units of “square kilometers”.

53.6 million hectares = 536,000 square kilometers

940,000 hectares = 9,400 square kilometers

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For more information about the "Land Area Understanding Square Kilometers" PPT courseware, please click the Land Area PPT Understanding Square Kilometers ppt tag.

"Understanding Square Kilometers" Land Area PPT Courseware 2:

"Understanding Square Kilometers" Land Area PPT Courseware 2 Consolidate Application 1. Fill in. 1. my country’s land area is approximately 9.6 million ( ). 2. The area of ​​a square land with a side length of 2000 meters is 4 ( ). 3.0.64 square kilometers = ( ) hectare = ( ) square meter. ..

"Understanding Square Kilometers" Hectares and Square Kilometers PPT Courseware 3:

"Understanding Square Kilometers" Hectares and Square Kilometers PPT Courseware 3 Teaching Objectives 1. Understand the actual meaning of square kilometers, appreciate the actual size of 1 square kilometer, know the progress rate between square kilometers, square meters and hectares, Unit conversion is possible. 2. Understand mathematics and life..

"Understanding Square Kilometers" Hectares and Square Kilometers PPT Courseware 2:

"Understanding Square Kilometers" Hectares and Square Kilometers PPT Courseware 2 Teaching Objectives 1. Through the study of this lesson, students should form an image of 1 square kilometer, establish the concept of space, and know the difference between square meters and hectares and square kilometers. progress rate. 2. Be able to use a calculator...

File Info

Update Time: 2024-11-20

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

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