Class: Primary 4

Term: 2nd Term

Week: 7

Age: 9 years

Duration: 40 minutes

Subject: Basic Science Technology

Curriculum Theme: Basic Science

Topic: Water

Content: Evaporation Of Water

Specific Objectives:

Cognitive Domain: Understand the concept of evaporation of water.
Affective Domain: Appreciate the importance of evaporation in the water cycle.
Psychomotor Domain: Demonstrate understanding through practical examples.
Social Domain: Discuss the social impacts and applications of water evaporation.

Reference Materials:

9 – Years Basic Education Curriculum
Abuja Educational Resource Centre Scheme of work
NAPPS National Unified Scheme of Work
Online Information
Textbooks

Instructional Materials:

Visual aids showing the water cycle
A small heating source and water for demonstration
Worksheets for class activities

Rationale for the Lesson:

Understanding the process of evaporation is fundamental in grasping the concept of the water cycle, which is crucial for understanding weather patterns and environmental science.

Prerequisite/Previous Knowledge:

Basic understanding of water properties and the sun’s role in heating.

INSTRUCTIONAL PROCEDURES:

Content Development: Water – Evaporation Of Water

Content	Time	Teaching Method	Teaching Strategy	Teacher’s Activity	Pupil’s Activity	Learning Point
Introduction	5 min	Interactive Lecture	Questioning	Introduce the topic and ask what students know about evaporation	Pupils share their prior knowledge	Setting the stage for new learning
Explanation of Evaporation	10 min	Demonstration	Explanation	Explain and demonstrate evaporation using heating source and water	Observing and asking questions	Understanding the concept of evaporation
Importance Of Water Evaporation in the Water Cycle	5 min	Discussion	Linking Concepts	Discuss how evaporation is part of the water cycle	Participating in the discussion	Relating evaporation to the water cycle
Practical Examples	10 min	Group Work	Discovery Learning	Guide students to list everyday examples of evaporation	Listing examples in groups	Applying the concept to daily life
Social Impact Discussion	5 min	Debate	Collaborative Learning	Facilitate a discussion on the impact of evaporation on society	Engaging in discussion	Understanding societal relevance
Note Taking	5 min	Writing	Summarization	Dictate notes for students to write down	Writing down notes	Ensuring retention of key concepts
Evaluation	2 min	Question-Answer	Assessment	Ask questions related to the lesson’s objectives	Responding to questions	Assessing understanding
Conclusion	3 min	Summary	Reinforcement	Summarize key points of the lesson	Listening attentively	Reinforcing the lesson

Classroom Note:

Evaporation Of Water

Evaporation is the process where liquid water turns into water vapor due to heat. This process is a crucial part of the water cycle and affects our environment and weather. Evaporation occurs in nature when the sun heats up water in rivers, lakes, or the ocean, causing it to rise into the air as vapor.

Importance Of Evaporation In Water Cycle

Regulation of Climate: Evaporation plays a critical role in regulating the Earth’s climate. It helps to cool the surface by absorbing heat when water turns into vapor.
Formation of Rain: Evaporation is essential for the formation of clouds, which are necessary for precipitation. Water vapor rises into the atmosphere, condenses into clouds, and eventually falls as rain or snow, replenishing water on the land.
Water Purification: Evaporation acts as a natural purification process. When water evaporates, it leaves impurities and salts behind, resulting in cleaner, purer water in the form of vapor.
Supporting Ecosystems: Many ecosystems, particularly aquatic ones, rely on the continuous process of evaporation and precipitation. This cycle maintains the level of water bodies, ensuring habitats for various aquatic species.

Agricultural Benefits: The water cycle, aided by evaporation, is vital for agriculture. Rainfall, derived from evaporated water, is a primary source of water for crops and replenishes soil moisture.

Evaluation:

What is evaporation?
Give an example of evaporation you might see in your daily life.
How does evaporation contribute to the water cycle?

Note to Teachers:

Customize the lesson content, teaching methods, and pupil activities to suit your teaching style, curriculum, and available resources.

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Lesson Note On Water – Evaporation Of Water (Basic 4)