# Ice Cream

Pupils plan quantities they will buy in order to maximise their profit from selling ice creams at a school event.

# Practical details

Suitability
National Curriculum levels 5 to 6
Time
30 minutes to 1 hour
Resources
Pencil, calculator and paper

# Key Processes involved

Representing
Interpret diagrams and words and select the appropriate information from them
Analysing
Work logically towards a result, recognising the impact of constraints. Calculate accurately and apply routine algorithms, making estimates and checking calculations
Interpreting and evaluating
Interpret their calculations in context
Communicating and reflecting
Show reasoning clearly

# Teacher guidance

Check that pupils fully understand the context, for example by explaining:

• You are planning to make and sell ice cream cones at the school sports day. You need to calculate the costs to make sure that you donâ€™t make a loss.
• What points would you think about?

Pupils may tackle this task in different ways, but might be expected to:

• solve simple problems involving ratio and direct proportion
• calculate fractional or percentage parts of quantities and measurements, using a calculator where appropriate
• interpret graphs and diagrams, including pie charts, and draw conclusions