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Subject: General Science
Semester: 1
Period: 1
Week: 1
School Name:
Teacher’s Name:
Subject: General Science
Grade Level: Grade 3
Date: Week 1
Lesson Duration: 45 minutes
Week & Period: Week 1, Period 1
Topic: Introduction to the Spheres of the Earth
Sub-topic: Understanding the Earth’s Organization and Its Spheres
Learning Objectives
By the end of the lesson, students should be able to:
Learners will interpret information from models of how the Earth is organized.
Learners will explain that the Earth is organized in different ways for different purposes.
Learners will relate the Earth’s spheres to their unique components.
Previous Knowledge
Students already know:
The Earth is where we live and is made up of land, water, air, plants, and animals.
Instructional Materials
Globe, diagrams of Earth’s spheres, pictures of soil, rocks, rivers, air, plants, and animals, chart papers.
Lesson Development – ABC Model
A – Anticipation (Warm-up / Starter)
Time: 5–10 minutes
Ask learners to name things they see around them in the classroom and outdoors. Guide them to classify them as land, water, air, or living things. Show a globe and ask questions like “Where do you think all these things belong on Earth?”
B – Building Knowledge (Main Lesson Body)
Time: 25–30 minutes
Learners’ Activities (Expanded):
- Students observe pictures, diagrams, and a globe showing the Earth’s spheres.
- Students are given sets of cards with pictures of soil, rocks, rivers, lakes, clouds, air, trees, plants, animals, and human activities. They work in pairs or small groups to match each example to the correct sphere.
- Learners discuss why each example belongs to a particular sphere.
- Students participate in a hands-on activity by creating a mini-model of the Earth using a round ball or a paper mache globe. They divide the globe into sections representing geosphere, hydrosphere, atmosphere, and biosphere, and label each part. They can use clay, water in a small container, cotton for clouds, and small toy animals or cut-out plants to represent the spheres.
- Learners describe their mini-model to the class, explaining what each sphere represents and giving at least one example.
Assessment Checks (Expanded):
- Ask learners questions such as:
- “Which sphere do rivers belong to? Why?”
- “Can you give an example of a living thing in the biosphere?”
- “What would happen if the atmosphere was not there?”
- Observe learners as they match examples to spheres and during the model-making activity to check understanding and participation.
- Encourage learners to explain to a partner why a certain example fits a sphere (peer assessment).
- Ask learners to write one sentence in their notebooks about their favorite sphere and why it is important.
Notes (Expanded & Detailed):
- The Earth is organized into four main spheres:
- Geosphere – land, rocks, mountains, soil, valleys. Example: Mount Nimba, soil in the school garden.
- Hydrosphere – all water bodies including rivers, lakes, seas, oceans, groundwater. Example: Saint Paul River, puddles after rain.
- Atmosphere – the layer of air surrounding the Earth, weather, clouds, wind. Example: rainy clouds, fresh air.
- Biosphere – all living things, including plants, animals, and humans. Example: monkeys in the forest, maize plants, students themselves.
- Each sphere interacts with others: plants (biosphere) need soil (geosphere) and water (hydrosphere) and air (atmosphere) to survive.
- Local examples should be used to make the lesson relatable. For instance, use nearby rivers, local trees, common animals, and observable weather phenomena.
- Emphasize that while each sphere is different, they work together to support life on Earth.
C – Consolidation (Conclusion & Assessment)
Time: 5–10 minutes
Summary:
Recap the four spheres and their components. Ask learners to give examples from their environment. Reinforce how the spheres interact.
Evaluation Method (Expanded)
Exit slip/quiz: Learners write down one example for each of the four spheres.
Teacher will collect slips and provide oral feedback.
Assignment (Expanded)
Draw a diagram of the Earth showing the four spheres and label at least one example in each sphere.
Follow-up Activity
Take learners outside to identify and record examples of the four spheres in the school environment.
Differentiation / Inclusive Strategies
Provide visual aids and models for learners who struggle with reading. Pair strong and weak learners for group activities. Give extra support to learners with fine motor difficulties during the model-making activity.
Teacher’s Reflection (After Class)
What worked well? ___________________________________________
What needs improvement? ____________________________________
Students’ engagement level: ☑ High ☑ Medium ☑ Low