This Nuffield investigation involves determining the number of text messages sent if four people send texts to each other, and then extending this for different numbers of people.

*Key processes applicable to this activity are:

*Representing - choosing method of representation to show the texts sent and
choice of method to establish the number of texts: that is, counting, adding or multiplying.

*Analysing - systematic working, using results obtained to make conjectures and generalisations for the number of texts sent by any number of people.

*Interpreting and evaluating - forming arguments based on findings and justifying conclusions.

*Communicating and reflecting - communicating findings effectively, relating findings to this and other contexts.

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