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Schemes of Work
QCA

Science at key stage 3    (Year 8)

Unit 8A: Food and digestion
Section 4: a. Which foods provide a balanced diet?

QCA

Objectives

Children should learn:
  • that a healthy diet contains a balance of foodstuffs

Activities

Outcomes

Children:
  • Introduce the idea that there are many different healthy and balanced diets by inviting pupils from a variety of backgrounds to describe some of the main features of their own or their family's diet. Suggest that pupils ask senior members of their family to describe the type of diet they had when they were children.
  • Use food packaging, advertising claims, media reports, or recorded television advertisements as a stimulus to raise questions, eg
    • Can too much salt be harmful?
    • What is a healthy diet?
    • Should children and adults have the same diet?
    • Are low-calorie alternatives always preferable?
    • How do diets of different cultures differ?
  • Raise the issue of what exactly is meant by a 'healthy' balanced diet.
  • explain that a healthy diet contains a balance of six groups of chemicals (proteins, carbohydrates, fats, vitamins, minerals, fibre) and water

Points to note

  • Teachers will be aware of the need to ensure that pupils are sensitive to differences between each other's individual diets as well as the diet of their families and friends.
  • Whilst the concept of a balanced diet is easy for pupils to understand, the media present much conflicting dietary advice, which may be biased according to its source.
  • Extension: pupils could find out about the special diets of other pupils and consider the reasons why the balance of constituents within these diets is different and important.

Sections in this unit

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This unit is divided into sections. Each section contains a sequence of activities with related objectives and outcomes. You can view this unit by moving through the sections or print/download the whole unit.
1. a. What's in food and why is it important?
2. b. What's in food and why is it important?
3. c. What's in food and why is it important?
4. a. Which foods provide a balanced diet?
5. b. Which foods provide a balanced diet?
6. c. Which foods provide a balanced diet?
7. Checking progress
8. a. What happens to food inside the digestive system?
9. b. What happens to food inside the digestive system?
10. a. What do digestive enzymes do?
11. b. What do digestive enzymes do?
12. Where are the products of digestion used?
13. Reviewing work