Uses And Sources of Chemical Energy for Primary 3

Class: primary Three
Term: Second Term
Subject: Basic Science and Technology
Curriculum Theme: Basic Science
Previous Lesson: Meaning, Sources and Uses of Electrical Energy
Topic: Chemical Energy
Content/Learning Area: What is Chemical Energy?, Sources of chemical Energy, Uses of Chemical energy
Time Allocation: 40 minutes

Performance Objectives

By the end of the lesson, pupils should be able to:

• Cognitive Domain:

1. Define chemical energy.
2. Identify four sources of chemical energy.
3. Identify four uses of chemical energy.

• psychomotor Domain:

1. Participate actively in class discussions.
2. Complete the evaluation questions accurately.

• Affective Domain:

1. Appreciate the importance of chemical energy in daily life.

• Social Domain:

1.Work cooperatively with peers during activities.

Reference Materials

• 9 – Years Basic Education Curriculum
• Abuja Educational Resource Center Scheme of Work
• NAPPS National unified Scheme of Work
• Online Information
• Relevant Textbooks

Instructional Materials

To deliver this lesson, the teacher will employ the help of the following materials:

• Whiteboard or chart paper
• markers or pens
• Pictures or diagrams of different sources and uses of chemical energy
• Examples of batteries, fuels (if safe and appropriate)

Rationale for the Lesson

Understanding chemical energy is crucial for comprehending how many everyday things work, from powering devices to cooking food. This lesson lays a foundation for future science topics.

Prerequisite/Previous Knowlege

The teacher will start by asking pupils what they know about energy, prompting them with examples like moving cars or their own bodies.

Lesson Content

What is Chemical Energy?

Chemical energy is the energy stored within the tiny particles of everything around us. When these particles combine or separate, they release energy, causing things to happen, like moving a car or enabling our bodies to function. It’s like hidden power within everything!

Chemical energy is a type of potential energy stored in the bonds of molecules. When these bonds break, energy is released, which can be used to do work. Burning wood, such as, breaks the chemical bonds in the wood, releasing heat and light energy.

Sources of Chemical Energy

Chemical energy comes from various sources that store energy in their chemical bonds.

the following are examples of sources of chemical energy:

1. Batteries: batteries store chemical energy released as electrical energy when connected to a circuit.
2. Fuel: Fuels like gasoline, diesel, and natural gas store chemical energy released as heat and light when burned.
3. Food: Food contains chemical energy our bodies use to grow,move,and think.
4. Rocks: Some rocks, like coal and oil shale, contain chemical energy used as fuel.
5. Water: Water generates electricity through hydroelectric power, harnessing the chemical energy stored in water molecules.
6. Wood: Wood is a renewable source of chemical energy, producing heat and light when burned.
7. Biomass: Organic matter like plants and agricultural waste can be burned to release chemical energy.
8. Propane: A gas commonly used for cooking and heating, propane stores chemical energy that is released upon combustion.

Uses of Chemical Energy

Chemical energy is utilized in various ways to power devices, facilitate processes, and enable transportation.

These include:

1. Powering devices: Chemical energy powers cars, phones, and computers.
2. Cooking: Chemical energy cooks food on stoves and in ovens.
3. Transportation: Chemical energy powers cars,trains,and airplanes.
4. Industrial processes: chemical energy is used in manufacturing,mining,and agriculture.
5. Heating: Chemical energy is used to heat homes, offices, and other buildings.
6. Electricity generation: Chemical energy is used to generate electricity in power plants.
7. Lighting: Chemical energy is used to power lamps and other lighting devices.
8. Agriculture: Chemical energy is used to power tractors and other farm equipment.

Teaching Methods

To deliver this lesson,‌ ⁤the teacher will⁤ adopt⁤ the following methods: Discussion, Question and answer, Use of visual aids.

Instructional Procedures

To deliver this lesson, the teacher will adopt the following steps:

Step 1: Introduction (Set Induction)

Time: 5 minutes
Teaching Skill: Questioning, Discussion
Teacher’s Activity: Engage pupils with questions about energy, introduce the topic of chemical energy.
Pupils’ Activity: Respond to questions, participate in discussion.

Step 2: Clarification of Key Concepts

Time: 10 minutes
Teaching Skill: Explanation, Definition
Teacher’s activity: Define chemical energy using simple language and examples.
Pupils’ Activity: Listen attentively, ask clarifying questions.

Step 3: Demonstration/Guided Practice

Time: 10 minutes
Teaching Skill: Demonstration, Guided Practice
Teacher’s Activity: show pictures/diagrams of sources and uses of chemical energy; guide pupils in identifying them.
Pupils’ Activity: observe, participate in identifying sources and uses.

Step 4: Self-Reliant Practice

Time: 5 minutes
Teaching Skill: Independent work
Teacher’s Activity: Pupils answer evaluation questions individually.
Pupils’ Activity: Answer evaluation questions independently.

Step 5: Note-Taking

Time: 5 minutes
Teaching Skill: Note-Taking
Teacher’s Activity: Guide pupils in summarizing key points.
Pupils’ Activity: Take notes on key concepts.

Step 6: Evaluation/Review

Time: 5 minutes
Teaching Skill: Review, Assessment
Teacher’s Activity: Review answers to evaluation questions.
Pupils’ Activity: Participate in review,ask questions.

Objective-aligned checks:

1. Define chemical energy.
2. Identify four sources of chemical energy.
3. Identify four uses of chemical energy.

Step 7: Conclusion

Time: 2 minutes
Teaching Skill: Summarization
Teacher’s Activity: Summarize the key points about chemical energy and its importance.Pupils’ Activity: Listen attentively and ask any remaining questions.

Lesson Keywords

• Chemical Energy – Energy stored in the bonds of molecules.
• Batteries – Devices that store chemical energy and convert it into electrical energy.
• Fuel – Substances that release energy when burned.
• Combustion – The process of burning a fuel to release energy.
• Molecules – Groups of atoms held together by chemical bonds.

Lesson Evaluation

To evaluate the learning, the teacher asks pupils to:

1. What is chemical energy?
2. Name four sources of chemical energy.
3. List three uses of chemical energy.
4. Why is chemical energy vital in our daily lives?
5. Give an example of how chemical energy is used in your home.

assignment/Homework

1. List five additional uses of chemical energy not mentioned in class.
2. Research and write a short paragraph on how batteries work.
3. Draw and label three sources of chemical energy.

Differentiation

• For slower learners: Provide one-on-one assistance and use simpler examples.
• for advanced learners: Encourage them to research additional sources and uses of chemical energy.
• For visual/auditory/kinesthetic learners: Use visual aids, discussions, and hands-on activities to cater to different learning styles.

Note for Teachers

Ensure to use real-life examples and visual aids to make the lesson engaging and understandable for primary three pupils. Adjust the pace of the lesson based on the pupils’ understanding and participation.