Maths · 15 minutes · 6–10 years

How many handspans?

Measure one table with two hands and discover why units matter.

All you need

A low table, paper and pencil.

Grown-up, read this first

Stay on the floor; never climb furniture.

Adapt to your child’s needs and stop if uncomfortable.

Let’s give it a go

Step ticks are temporary for this tab session. You can read every step without ticking.

A question to take with you

Did the table change, or did the unit change?

Talk it through or draw on paper. There is no answer box or personal information to submit.

Make it gentler

Measure a book with finger widths.

Take it further

Compare centimetres with handspans if a ruler is available.