We are conducting a maths investigation to find out how much water is wasted when people brush their teeth. To complete this investigation we will need to use multiplication and understand capacity and how to convert mL to litres.

Step 1: Estimate how much water is wasted when:

a) A person brushes their teeth and does not leave the tap running.

b) A person brushes their teeth and does leave the tap running.

Step 2: Conduct the experiment for both a & b and record the results.

Step 3: Using multiplication, work out how much water is wasted in 1 day, 1 week and 1 year both a & b.

Step 4: Record your results in a table.

Step 5: Present your data in a comparative line graph.

Step 6: Publish your work with a results and conclusion about the investigation.