This activity uses the familiar environment of a swimming pool to introduce negative numbers, and is designed to be accessible to primary pupils at Key Stages 1 and 2.
Detailed teachers' notes for this activity are available on our NRICH website.
Further information
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Detailed teachers' notes for this activity are available on our NRICH website, where you can also find thousands more mathematical resources including problems, investigations and games for all ages from 5 to 19.
