Place four pebbles on the sand in the form of a square. Keep adding as few pebbles as necessary to double the area. How many extra pebbles are added each time?
A Day with Grandpa
Stage: 2 Challenge Level:
Remember there are 12 inches in a foot and three feet in a
Might it help to draw a sketch?
Perhaps you can use your diagram to think about how many square
inches there are in a square foot and how many square feet there
are in a square yard?
The NRICH Project aims to enrich the mathematical experiences of all learners. To support this aim, members of the
NRICH team work in a wide range of capacities, including providing professional development for teachers wishing to
embed rich mathematical tasks into everyday classroom practice. More information on many of our other activities
can be found here.