"Understanding Hectares" Land Area PPT Courseware

Description

"Understanding Hectares" 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. What units of area have we already learned?

Square meters, square decimeters, square centimeters

2. What is the progress rate between them?

1 square meter = 100 square decimeters

1 square decimeter = 100 square centimeters

1 square meter = 10,000 square centimeters

To measure the area of ​​land, square meters and hectares are commonly used as units.

"Ha" is a special unit for measuring the area of ​​land.

Calculate how many square meters equal to 1 hectare.

100×100=10000 (square meters)

1 hectare = ( ) square meter

A square piece of land with a side length of 100 meters has an area of ​​1 hectare.

*Hare can be represented by the symbol "hm".

practice

1. The area of ​​Tiananmen Square is 440,000 square meters, or how many hectares? If there are 4 people per square meter, how many people can Tiananmen Square accommodate?

2. The Summer Resort is located north of the center of Chengde, 230 kilometers away from Beijing. It is one of the cultural heritages listed in the World Heritage List in my country. It covers an area of ​​approximately 5,640,000 square meters, or ( ) hectares.

3. A parking lot covers an area of ​​1 hectare, and each car occupies an area of ​​approximately 25 square meters. How many cars can be parked in this parking lot?

1 hectare = 10,000 square meters

10000÷25＝400 (vehicles)

A: This parking lot can accommodate up to 400 cars.

4. A cultural square covers an area of ​​1 hectare and is paved with square cement bricks with a side length of 0.8 meters. How many such cement bricks are needed in total?

1 hectare = 10,000 square meters

10000÷(0.8×0.8)=15625 (blocks)

Answer: A total of 15,625 such cement bricks are needed.

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

"Understanding Hectares" Land Area PPT Courseware 2:

"Understanding Hectares" Land Area PPT Courseware 2 Consolidate Application 1. Fill in. 1. To measure the area of ​​land, ( ) and ( ) are commonly used as units. 2. A square with a side length of 10 meters has an area ( ). 3.1 hectare = ( ) square meter. 4.The side length is 200 meters..

"Understanding Hectares" Calculation of Polygon Area PPT Courseware:

"Understanding Hectares" Calculation of Polygon Area PPT Courseware Fill in the appropriate unit name in the brackets below. The area of ​​a piece of eraser is about 15 ( ). The surface area of ​​a desk is approximately 24( ). The area in front of a blackboard is approximately 4 (..

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Update Time: 2024-11-21

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

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