Stage: 1 Challenge Level: 
Why do this problem?
This problem provides an appealing context for practising the
three times table. It gives an opportunity for children to realise
that there is not necessarily just one answer to a mathematical
problem.
Children might find it helpful to use this sheet of the grid with
counters.
Key questions
Shall we count together in threes?
Which square could we go to next?
Possible extension
You could challenge to find every possible route.Possible support
You could suggest that children write out the numbers in the three times table first. They might also find it easier to start at $30$ and work backwards.Multiplication & division. Prime numbers. Investigations. Interactivities. Addition & subtraction. Odd and even numbers. Factors and multiples. Arithmetic sequence. Trial and improvement. Working systematically.
Published October 2001.
Copyright © 2007. University of Cambridge. All rights reserved.
NRICH is part of the family of activities in the Millennium Mathematics Project, which also includes the Plus and Motivate sites.
email: nrich@damtp.cam.ac.uk