Creativity, PSHE amp; Drama: find words of songs about sugar. Make up acrostics (Sugar, Sweet, Honey). "Hotseat" a "spokesperson" from the fizzy drink industry. Invite the school dentist in. Make pictures out of coloured icing. Look at how sweets are advertised. Make up an advertising campaign (posters, TV ads) for healthy sweets.
Literacy, numeracy amp; science: Read The Hungry Giant by Joy Cowley. Make up "ironic" stories. Make cakes with and without sugar. Describe the differences. Collect food packaging and make sets of those containingnot containing sugar. Work out average class consumption of sugar. Dissolve teeth in fizzy drinks. Write a log of progress.