Science at key stage 3 (Year 9)

Unit 9B: Fit and healthy

Prior learning

It is helpful if pupils can:

describe a balanced diet and know this is required for healthy growth
name the gases exchanged in the alveoli of the lungs
know that developing foetuses obtain materials from the mother's blood supply through the placenta
name some inherited characteristics

Sections in this unit

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 do we mean by fit?
	2. b. What do we mean by fit?
	3. What helps the respiratory system to function?
	4. What is the effect of smoking on the lungs and other body systems?
	5. a. Why is diet important?
	6. b. Why is diet important?
	7. How does alcohol affect the body?
	8. a. What else can we do to maintain fitness?
	9. b. What else can we do to maintain fitness?
	10. a. What effects do drugs have?
	11. b. What effects do drugs have?
	12. Are we healthier than our great-grandparents were?
	13. Reviewing work