"Planting Issues" Land Area PPT Courseware

Description

"Planting Issues" Land Area PPT Courseware

teaching objectives

1. Experience the process of collecting data, analyzing and comparing data to understand the current status of land issues in my country.

2. Understand the actual situation of my country's land area and per capita area, as well as the global land desertification problem, and be able to use calculators to solve large-number calculations.

3. Understand the objectivity of using data to explain problems, cultivate a scientific attitude of using data to speak, and stimulate the awareness and sense of responsibility to love the motherland and care for environmental resources.

Explore new knowledge

Uncle Li wants to plant fruit trees in an area 120 meters long and 60 meters wide. He investigated the planting techniques of fruit trees and the prices of saplings, and initially drafted two planting plans:

Based on life experience, let’s talk about the actual meaning of plant spacing and row spacing.

Plan A

120×60÷(4×5)=360 (trees)

15×360=5400 (yuan)

Plan B

120×60÷(4×3)=600 (trees)

18×600＝10800 (yuan)

practice

1. Kaoshantun wants to green a barren hill with an area of ​​3.2 hectares.

(1) Plant pine trees. How many saplings do I need to buy in total?

(2) Each sapling sells for 15 yuan. How many yuan does it cost to purchase these saplings?

(3) 8 people contracted the greening task. How many days will it take to complete the greening task?

2. A rectangular cotton experimental field is 360 meters long and 120 meters wide. The spacing between plants is 0.3 meters and the spacing between rows is 0.6 meters.

(1) How many cotton plants are there in this cotton field?

360×120÷(0.6×0.3)=240000 (plant)

Answer: There are 240,000 cotton plants in this cotton field.

(2) Approximately how many kilograms of cotton can be produced?

240000×0.08=19200 (kilogram)

Answer: Approximately 240,000 kilograms of cotton can be produced.

(3) Ask teachers and parents about the purchase price of cotton, and calculate how much revenue this cotton field can earn.

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For more information about the "Land Area Planting Problem" PPT courseware, please click on the Land Area PPT Planting Problem ppt tag.

"Planting Problems" Land Area Flash Animation Courseware:

"Planting Problem" Land Area Flash Animation Courseware This courseware is a teaching material for the Hebei Education Edition fifth-grade mathematics volume 1 unit 7 Land Area. The planting problem Flash animation courseware has vivid content. Please download it! Keywords: land area teaching courseware, planting..

File Info

Update Time: 2024-09-07

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

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