Grade 4

What is a diameter?

diameter

The distance straight across a circle through its centre.

For example

A breadfruit cut straight through its middle is cut along the diameter.

In Grade 4

Children fold a paper circle in half and measure the fold, which passes through the centre.

Watch out for

Children often measure any line across a circle as the diameter. It only counts when it passes through the centre.

Say it at home

Fold a circle of paper in half and measure along the crease together.

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