- Remind pupils of work they did in unit 7A 'Cells' on the way in which cells are arranged into tissues, and ask them to list a variety of body tissues. Point out that the food we eat has to provide the components for growth and repair of all tissues as well as energy for activity.
- Use quick oral questions to review pupils' knowledge of the components of a balanced diet (covered in unit 8A 'Food and digestion'). Discuss the effect of the shortage of a particular dietary component and some of the overall consequences,
eg children succumb more easily to waterborne infections and measles, developmental delay, effects of low-energy foods in the diet, lack of calcium in bones and teeth.
- Provide pupils with secondary sources, including ICT, to identify the consequences of specific nutrient deficiencies. Consider investigations into the effects of specific nutrient deficiencies,
eg the work of Magendie and Gowland Hopkins, the role of folic acid in development, the recognition of kwashiorkor (protein deficiency).
- Ask pupils about other ways in which a diet may be unhealthy and talk about ways in which overeating can affect health and lifestyle. Help pupils make a summary of the nutrients needed for a healthy diet and some of the consequences of an inadequate or inappropriate diet.
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- describe the effects of deficiencies in diet,
eg of calcium, iron, protein
- describe some effects of an unhealthy diet,
eg obesity, rickets, scurvy
- describe evidence linking nutrition and health, and how evidence has been used
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