Workshop 2007: Blog as a Thinking Tool in Learning Mathematics - Activity 7

Instructions...

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You have been invited to be one of the co-editors of this blog.

Remember to sign in... Enter your response to the question as a Post (not under comments).

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If x³ = 27. What is the value of x ?

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x²

Concept of Area and Applications

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Area is the extent of a 2-dimensional surface enclosed within a boundary.

We cannot say it is a 2 dimensional object because all objects in real life are 3 dimensional unless we consider time as the 4th dimension, which will probably cause everyone to be confused...

Application in real life includes calculation of the area of a floor and the area of a wall to determine how many tiles to use.

Concept of Area

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Area is the space on any 2-dimensional surfaces that have length and breadth and the unit of measurement is usually in square centimetres or square metres.

Application of area :
(1) number of tiles needed to tile a floor with given certain dimensions.
(2) finding the surface area of objects like boxes.

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1) Area is the amount of space within an enclosed 2D object.
2) Example for real-life situations: When buying paint to paint a wall

Area Definition

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The space within a given region.

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Area is 2 dimensional measurement, in contrast to length which is1-dimensional measurement and volume which is 3-dimensional measurement.

When we purchase apartments and properties, one of the most important considerations is the floor area (built-in area).

When we paint our house, we quite often have to consider how many tins of paint are needed to paint the walls.

Comments on Area

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Amount of space taken up by a 2d figure.

Find the maximum possible number of pieces of 10 cm by 10 cm paper to cover up a noticeboard with dimensions 4.5 m by 3 m.

What is the difference in area for your EL textbook and Maths textbook?

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What measurements would you need? What do you need to do with the measurements you have? How much difference is there? Is there any relationship between area and weight?

Activity 7

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Area defines the space bounded by line segments and curves.

Real life examples include floor plans.

Area

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Area is the amount of space within a pre-determined boundary (in 2 dimensions).

Egs. in real life: amount of paper needed to make a box, amount of grass within fences

Activity 7

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Area means the space occupied by an object and it is 2 dimensional.
Real-life applications: area in floor plans, prices of tiles.

Area / Application

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Area = L x B

Application - Painting

Concept of Area

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Amount of 2D space taken up.

Real-life application: Maximum area with minimum perimeter. Packaging; cost-saving...