- Ask pupils in groups to investigate the energy resource in foods,
eg breakfast cereals, snack foods, crispbread and marshmallow, by burning them and measuring the rise in temperature of some water. To help pupils plan, remind them of the fuel enquiry at the beginning of this unit.
- Draw together results from different groups and ask pupils to suggest how results could be presented so that those of different groups could be compared. Ask pupils for results which do not fit the overall pattern and to suggest reasons for this.
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- describe how they have carried out a comparison of foods, making sure the comparison was fair
- produce and present records of temperature rise to compare energy output of different foods
- evaluate reliability of their results compared with other groups,
eg better control of heating, less heat 'lost'
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