Difference between revisions of "Surface area of a cuboid"
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| + | ===Objectives=== | ||
| + | #Properties of a cuboid. | ||
| + | #Derivation of the formula for total surface area, lateral surface area and volume of a cuboid. | ||
| + | #Understand the concept of open cuboid, closed cuboid. | ||
| + | ===Estimated Time=== | ||
| + | 40 minutes. | ||
| + | ===Prerequisites/Instructions, prior preparations, if any=== | ||
| + | ===Materials/ Resources needed=== | ||
| + | Digital: Laptop, geogebra file, projector and a pointer. | ||
| + | |||
| + | ===Process (How to do the activity)=== | ||
| + | #Project geogebra file and let children explore a cuboid from all angles by moving the sliders. | ||
| + | #Ask the following questions. | ||
| + | *Developmental Questions: | ||
| + | #What is a solid figure ? | ||
| + | #Name the dimensions of the cuboid. | ||
| + | #Recognise the face of each surface of the cuboid. | ||
| + | #Are all faces congruent ? | ||
| + | #Which of the faces are congruent ? | ||
| + | #What is the formula to find area of a rectangle ? | ||
| + | #To what is the total surface area of a cuboid equal ? | ||
| + | #To what is the lateral surface area of a cuboid equal to ? | ||
| + | *Evaluation: | ||
| + | #What is the formula to find the total surface area of a cuboid ? | ||
| + | #What is the formula to find the lateral surface area of a cuboid ? | ||
| + | *Question Corner: | ||
| + | #What is the area of an open cuboid ? | ||
Revision as of 06:23, 24 May 2019
Objectives
- Properties of a cuboid.
- Derivation of the formula for total surface area, lateral surface area and volume of a cuboid.
- Understand the concept of open cuboid, closed cuboid.
Estimated Time
40 minutes.
Prerequisites/Instructions, prior preparations, if any
Materials/ Resources needed
Digital: Laptop, geogebra file, projector and a pointer.
Process (How to do the activity)
- Project geogebra file and let children explore a cuboid from all angles by moving the sliders.
- Ask the following questions.
- Developmental Questions:
- What is a solid figure ?
- Name the dimensions of the cuboid.
- Recognise the face of each surface of the cuboid.
- Are all faces congruent ?
- Which of the faces are congruent ?
- What is the formula to find area of a rectangle ?
- To what is the total surface area of a cuboid equal ?
- To what is the lateral surface area of a cuboid equal to ?
- Evaluation:
- What is the formula to find the total surface area of a cuboid ?
- What is the formula to find the lateral surface area of a cuboid ?
- Question Corner:
- What is the area of an open cuboid ?