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Indirectly compare area

• Indirectly compare the areas of two surfaces that cannot be moved or superimposed

• Predict which of two similar shapes has the larger area and check by covering

Measure areas using uniform informal units

• Explore area using uniform informal units to cover the surface in rows or columns without gaps or overlaps

• Measure area by selecting and using appropriate uniform informal units

• Explain the relationship between the size of a unit and the number of units needed to measure an area

• Explain why the area remains constant when units are rearranged

• Record areas by referring to the number and type of uniform informal unit used

• Identify any parts of units left over when counting uniform informal units to measure area

• Estimate areas by referring to the number and type of uniform informal unit used and check by measuring