Lesson: Water Scarcity
Year: 5 | Subject: Geography | Time Allocation: 100%
Class/Set: ____________ Date/Term: ____________
LO (WALT): To understand the global distribution of fresh water and the factors leading to water scarcity.
Success Criteria (WILF):
- I can explain why only a tiny fraction of Earth’s water is available for human use.
- I can identify and locate global regions experiencing high levels of water scarcity.
- I can describe how climate change and population growth contribute to water stress.
1. Starter (15%)
- Activity: 'The Water Drop' Retrieval.
- Question: If all the water on Earth fit into a 10-litre bucket, how much do students think is fresh water available for us to drink?
- Demonstrate: Pour 9.7 litres into a 'Salt Water' bowl and 300ml into a 'Fresh Water' glass.
- Explain: Of that 300ml, most is frozen in glaciers. Show a single teaspoon (approx. 10ml) representing the accessible fresh water in rivers and lakes.
- Discuss: Does this feel like enough for 8 billion people?
2. Main Activity (70%)
Teacher Input:
- Display: A choropleth map showing global water stress. Highlight regions such as North Africa, the Middle East, and Central Asia.
- Explain: Define 'Water Scarcity' as a lack of sufficient available water resources to meet the demands of water usage within a region.
- Model: Use a flow chart to demonstrate the link between climate change (changing rainfall patterns) and water availability.
- Discuss: Explore population growth. Use the 'Canteen Analogy': if 30 students are promised a glass of water, but 100 students turn up, what happens to the portion size?
- Connect: Briefly explain the impact of lack of clean water on health (e.g. water-borne diseases) and education (e.g. children walking miles to collect water instead of being in school).
Student Task:
- Task A (Mapping): Shade a world map using a colour key to identify 'High', 'Medium', and 'Low' water-risk regions based on the provided data set.
- Task B (Categorisation): Complete a table sorting factors into 'Physical Causes' and 'Human Causes' of water scarcity.
- Task C (Reasoning): Write a short paragraph explaining why a country like Egypt might face greater water challenges than the UK, using the term 'population density'.
3. Plenary (15%)
- Check: Use 'Thumb Voting'. "Is water scarcity only caused by the weather?" (Thumbs down). "Does every person on Earth have equal access to clean water?" (Thumbs down).
- Consolidate: Reflection question: "If you were the leader of a country with very little water, what is the first thing you would do to save it?"
- Summarise: Reiterate that while Earth is a 'Blue Planet', fresh water is a finite and precious resource.
4. Resources
- 10L bucket, measuring cylinder, and teaspoon for the starter demonstration.
- Global Water Stress Map (A3 per desk).
- World map outlines for student shading.
- Cause-sorting cards (Physical vs. Human).
- Geography exercise books.
⚠ TEACHER’S GUIDANCE
💡 Pedagogical Insights
- Year 5 Calibration: At this stage, students are moving from describing 'hot and cold' places to understanding complex causal links. Ensure you use the term 'distribution' frequently to build geographical fluency.
- Misconception Alert: Many students believe that because it rains a lot in the UK, water scarcity isn't a "real" problem. Remind them that water is often moved across the country and that some UK regions (like the South East) face 'economic' water stress during heatwaves.
- Sensitive Context: When discussing lack of clean water, be mindful of students who may have family in regions currently experiencing drought or water-related conflict. Focus on the 'British Value' of mutual respect and global responsibility.
✅ Answer Key & Solutions
Task A: Mapping (Regions to highlight as High Risk)
- North Africa (Sahara region).
- Middle East (Saudi Arabia, UAE, Jordan).
- Central/South Asia (Parts of India and Pakistan).
- Western United States and parts of Australia.
Task B: Categorisation Table
| Physical Causes |
Human Causes |
| Drought/Low rainfall |
Population growth |
| Climate change (evaporation) |
Pollution of rivers |
| Geography (distance from rivers) |
Over-use in farming (irrigation) |
| Natural seasonal changes |
Industrial waste |
Task C: Reasoning (Model Answer)
- WAGOLL: Egypt faces greater water challenges than the UK because it has a very high population density along the River Nile, meaning many people rely on one single water source. Additionally, Egypt’s climate is much hotter and drier than the UK’s, leading to higher evaporation and less frequent rainfall to refill reservoirs.
Plenary Hinge Question
- Q: Which of these is a human cause of water scarcity?
- a) ☐ A long period of no rain (Drought).
- b) ☐ Water being polluted by a factory.
- c) ☐ High temperatures causing water to evaporate.
- d) ☐ Living in a desert.
- Answer: b)