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Compare lengths using uniform informal units

• Compare the lengths of two or more objects using appropriate uniform informal units and check by placing the objects side by side and aligning the ends.

• Explain why the length of an object remains constant when rearranged.

• Estimate lengths, indicating the number and type of unit used and check by measuring.

Subdivide lengths to find halves and quarters

• Use concrete materials to model both half and quarters of a whole length, highlighting the length.

• Identify two equal parts and the relationship of the parts to the whole length, linking words and images.

• Recognise when lengths have or have not been divided into halves and quarters.