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Science at key stage 3    (Year 9)

Unit 9D: Plants for food
Section 1: a. Where does our food come from?

QCA

Objectives
Children should learn:
  • to use ideas about feeding relationships in a new context
  • to combine ideas from different sources

Activities

Outcomes
Children:
  • Review pupils' knowledge and understanding of feeding relationships by asking them to draw food chains representing a typical meal that they may have eaten. Help them to combine their responses to show the wide variety of foods that humans eat, and the complexity of the human food web.
  • Ask pupils questions about why plants can be food sources and the importance of the Sun as an energy source for food chains. Check pupils' understanding and relate their ideas to the food web produced.
  • construct a food web showing feeding relationships of humans
  • explain the meaning of terms, eg producer, consumer, energy source, herbivore, in relation to food chains

Points to note
  • This activity is designed to elicit pupils' knowledge of feeding relationships. Teachers will need to bear this in mind in later work.
  • For this activity, teachers may need to provide information about the foods that different animals are fed on farms.
  • There is an opportunity here to revise the concept of a balanced diet, covered in unit 8A 'Food and digestion', and to consider cultural issues relating to food and diet, and the various diets that are typical of different parts of the world.

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. Where does our food come from?
2. b. Where does our food come from?
3. Checking progress
4. a. How do fertilisers affect plant growth?
5. b. How do fertilisers affect plant growth?
6. a. How does competition with other plants affect plant growth?
7. b. How does competition with other plants affect plant growth?
8. a. How do pests affect plant growth?
9. b. How do pests affect plant growth?
10. c. How do pests affect plant growth?
11. a. What is the perfect environment for growing plants?
12. b. What is the perfect environment for growing plants?
13. Reviewing work