**A mathematics investigation involving length, embedded in a real-world context.**

This open-ended mathematics investigation has been designed to deepen students’ understanding of length.

In this investigation, the school principal needs to find helpers to give a signal to be quiet during assemblies. The assemblies take place in a large space so he needs people with long fingers so that everyone can actually see the signal!

This teaching resource includes:

- teacher notes, detailing a range of important information about the investigation
- a detailed description of the investigation for students, including step-by-step instructions
- collecting and recording data worksheet
- reflection questions.

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