Difference between revisions of "Surface area of a cuboid"

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Cuboid as a shape and its properties are examined.
  
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===Objectives===
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#Properties of a cuboid.
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#Derivation of the formula for total surface area, lateral surface area and volume of a cuboid.
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#Understand the concept of open cuboid, closed cuboid.
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===Estimated Time===
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40 minutes.
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===Prerequisites/Instructions, prior preparations, if any===
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Students should know concept of area and should be able to calculate area for plane figures
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===Materials/ Resources needed===
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Digital: Laptop, geogebra file, projector and a pointer.
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Geogebra file: [https://ggbm.at/kfchwxef Cubiod surface area]
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{{Geogebra|kfchwxef}}
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===Process (How to do the activity)===
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#Project geogebra file and let children explore a cuboid from all angles by moving the sliders.
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#Ask the following questions.
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*Developmental Questions:
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#What is a solid figure ?
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#Name the dimensions of the cuboid.
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#Recognise the face of each surface of the cuboid.
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#Are all faces congruent ?
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#Which of the faces are congruent ?
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#What is the formula to find area of a rectangle ?
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#To what is the total surface area of a cuboid equal ?
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#To what is the lateral surface area of a cuboid equal to ?
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*Evaluation:
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#What is the formula to find the total surface area of a cuboid ?
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#What is the formula to find the lateral surface area of a cuboid ?
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*Question Corner:
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#What is the area of an open cuboid ?

Latest revision as of 07:39, 29 May 2019

Cuboid as a shape and its properties are examined.

Objectives

  1. Properties of a cuboid.
  2. Derivation of the formula for total surface area, lateral surface area and volume of a cuboid.
  3. Understand the concept of open cuboid, closed cuboid.

Estimated Time

40 minutes.

Prerequisites/Instructions, prior preparations, if any

Students should know concept of area and should be able to calculate area for plane figures

Materials/ Resources needed

Digital: Laptop, geogebra file, projector and a pointer.

Geogebra file: Cubiod surface area


Download this geogebra file from this link.


Process (How to do the activity)

  1. Project geogebra file and let children explore a cuboid from all angles by moving the sliders.
  2. Ask the following questions.
  • Developmental Questions:
  1. What is a solid figure ?
  2. Name the dimensions of the cuboid.
  3. Recognise the face of each surface of the cuboid.
  4. Are all faces congruent ?
  5. Which of the faces are congruent ?
  6. What is the formula to find area of a rectangle ?
  7. To what is the total surface area of a cuboid equal ?
  8. To what is the lateral surface area of a cuboid equal to ?
  • Evaluation:
  1. What is the formula to find the total surface area of a cuboid ?
  2. What is the formula to find the lateral surface area of a cuboid ?
  • Question Corner:
  1. What is the area of an open cuboid ?
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