Reasoning
Measures - Thinking about Area and Perimeter
Progression Continua
Element
Reasoning
f
The learner
Estimates using base units with increasing accuracy.
Evaluates the reasonableness of measurements with reference to estimations and personal benchmarks.
g
The learner
Explains and justifies the selection of unit of measure used to measure and/or compare things.
​
Makes reasonable estimations using appropriate units of measurement.
Explains and justifies the selection of appropriate instrument for a given situation, depending on the level of accuracy required.
04.
h
The learner
Justifies the specific unit of measurement used to describe the attribute.
Orders and compares non-equivalent units of measurements.
Deduces formulae for measuring from experience with practical measurement tasks.
Element
Reasoning
i
The learner
Uses smaller units of measurement where a more accurate measurements is necessary.
​
Realises when a more accurate measurement is unhelpful to solving a problem.
Tests and evaluates the reasonableness of measurements and numerical calculations of measurements.
j
The learner
Justifies the size of the unit selected when calculating measures and solving problems involving measures.
04.
k
The learner
Deduces and uses formulae to find the perimeters and areas of polygons and the volumes of prisms.
​
Justifies formula used for such cases.