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OUTCOME
A student:
MAe-10MG: describes and compares areas using everyday language
TEACHING POINT | The attribute of area is the amount of surface (either flat or curved) and can be measured in square units, eg square centimetres (cm2), square metres (m2). |
| In Early Stage 1, students develop an awareness of the attribute of area and some of the language used to describe area. They develop an awareness of the attribute of area through covering activities, through colouring in, and as comparisons of area are made. | |
| Students should be given opportunities to compare: two similar shapes of different areas where one fits inside the boundary of the other; two different-shaped areas where one can be placed on top of the other; two shapes where one shape can be cut up and pasted onto the other. | |
| Once students can compare two areas, they should then be given the opportunity to order three or more areas. This process requires students to understand that if A is larger than B, and B is larger than C, then A is larger than C. |
LANGUAGE | Students should be able to communicate using the following language: area, surface, closed shape, inside, outside, bigger than, smaller than, the same as. |
Superimposing – the comparison of areas by placing one area on top of another.
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Superpositioning – the comparison of areas by aligning the edges (or corners) of two areas when one is placed on top of the other.
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Use direct comparison to decide which shape has a larger area and explain their reasoning using everyday language | identify the attribute of ‘area’ as the measure of the amount of surface |
| cover surfaces completely with smaller shapes | |
| make closed shapes and describe the area of each shape | |
| use everyday language to describe area, eg surface, inside, outside | |
| use comparative language to describe area, eg bigger than, smaller than, the same as | |
| compare two areas directly, eg superimposing or superpositioning two surfaces | |
record area comparisons informally by drawing, tracing, or cutting and pasting, and by using numerals and words |
To be added
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