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Subject: General Science
Semester: 1
Period: 3
Week: 15
School Name:
Teacher’s Name:
Subject: General science
Grade Level: Grade 6
Date: Week 15
Lesson Duration: 45 minutes
Week & Period: Week 15, Period 3
Topic: Global Warming
Sub-topic: Meaning of global warming and its effects on Liberia
Learning Objectives
By the end of the lesson, students should be able to define global warming in simple terms, describe its effects on the environment, agriculture, and communities in Liberia, and give examples of local events linked to global warming.
Previous Knowledge
Students already know that weather and climate affect the environment and human life.
Instructional Materials
Pictures of floods, droughts, heatwaves, videos on global warming effects, chart paper, markers.
Lesson Development – ABC Model
A – Anticipation (Warm-up / Starter)
Time: 5–10 minutes
Ask learners to recall recent unusual weather events in their community and discuss possible causes.
B – Building Knowledge (Main Lesson Body)
Time: 25–30 minutes
Learners’ Activities (Expanded):
- Introduction and Observation:
- Teacher shows short videos, pictures, or animations illustrating floods, droughts, rising temperatures, and other climate changes in Liberia.
- Learners work in small groups to discuss what they see and predict how these events affect farms, homes, water sources, and wildlife.
- Groups record their ideas on chart paper.
- Definition and Explanation:
- Global Warming: A gradual increase in Earth’s average temperature caused mainly by the buildup of greenhouse gases in the atmosphere.
- Greenhouse Gases: Gases like carbon dioxide (CO₂), methane (CH₄), and nitrous oxide (N₂O) that trap heat from the sun in the atmosphere, warming the planet.
- Human Activities Contributing to Global Warming:
- Burning fossil fuels (coal, petrol, diesel).
- Deforestation and tree cutting.
- Industrial emissions and waste burning.
- Effects of Global Warming:
- Rising temperatures and heatwaves.
- Irregular rainfall, droughts, and flooding.
- Reduced crop yields and food shortages.
- Health impacts such as heat stress, malaria spread, and waterborne diseases.
- Displacement of communities and loss of biodiversity.
- Practical Activities:
- Group Discussion: Learners share local experiences of heatwaves, floods, or crop failure.
- Cause and Effect Chart: Students create a chart linking human activities to greenhouse gas emissions and then to effects like floods or droughts.
- Role Play: Learners act out scenarios showing how global warming affects farmers, wildlife, and communities.
- Observation Activity: Students note changes in temperature or rainfall in their local area over the past month.
- Examples and Discussion:
- Local Examples in Liberia:
- Flooding in Monrovia during heavy rains.
- Increased heat during dry seasons.
- Reduced crop production due to irregular rainfall.
- Teacher emphasizes that even small daily actions contribute to greenhouse gases, and awareness is key to prevention.
- Assessment Checks:
- Teacher asks:
- “Give one effect of global warming on crops, animals, or communities.”
- “Name one greenhouse gas.”
- “Mention one human activity that contributes to global warming.”
- Mini-quiz: Learners match effects with causes of global warming.
- Peer review: Groups present their cause-and-effect charts, and classmates check for correctness.
Notes (Expanded & Detailed):
- Global Warming: Gradual increase in Earth’s temperature due to greenhouse gases.
- Greenhouse Gases: CO₂, CH₄, N₂O trap heat, warming the planet.
- Human Activities: Burning fossil fuels, deforestation, industrial emissions.
- Effects: Rising temperatures, floods, droughts, reduced crop yields, health risks, displacement of communities, and loss of biodiversity.
- Local Examples: Floods in Monrovia, hotter dry seasons, crop losses.
- Observing local climate events helps learners connect theory to real-life impacts.
C – Consolidation (Conclusion & Assessment)
Time: 5–10 minutes
Summary: Learners summarize the meaning of global warming, its causes, and its effects in Liberia.
Evaluation Method (Expanded)
Exit slip/quiz: Write one effect of global warming in Liberia. Teacher collects slips and provides feedback.
Assignment (Expanded): Make a poster showing global warming effects in Liberia.
Follow-up Activity: Research a recent climate-related disaster in Liberia and report findings.
Differentiation / Inclusive Strategies: Use visual aids, group discussions, and simplified explanations for learners with difficulties.
Teacher’s Reflection (After Class)
What worked well? ___________________________________________
What needs improvement? ____________________________________
Students’ engagement level: ☑ High ☑ Medium ☑ Low