Class: Senior Secondary School 1 (SS1, SS 1, SSS1, SSS 1)
Term: 2nd Term
Week: 10
Age: 15 years
Duration: 45 minutes
Subject: Geography
Curriculum Theme: Geography
Previous Lesson: Vegetation Resources of Nigeria.
Topic: MAPWORK/READING
Subject Matter: Meaning of maps, types of maps, examples and uses of maps, definition of scale, types of scale, attributes of map scales, small and large scale maps, merits and demerits of scales, conversion of one type of scale to another

Specific Objectives

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

Cognitive Domain:

Define a map and map scale.
List and explain different types of maps and map scales.
State the uses of maps.
Differentiate between small scale and large scale maps.
Explain the attributes, merits, and demerits of map scales.
Describe the process of converting one type of scale to another.

Affective Domain:

Appreciate the importance of maps in daily life and various professions.
Show interest in identifying and interpreting different map features.
Develop a desire to practice map reading skills.

Psychomotor Domain:

Identify different types of maps presented to them.
Accurately convert one type of map scale to another.
Use a ruler or measuring tape to interpret distances on a map.

Collaborate with peers to identify and discuss map features.
Participate actively in class discussions about map interpretation.

Reference Materials

The following resources were used in planning this lesson:

9 Years Basic Education Curriculum for Geography (Senior Secondary).
State Unified Scheme of Work for Senior Secondary Geography.
Adeleke, B.O. & Leong, G.C. (2009). Certificate Physical and Human Geography for Senior Secondary Schools. Ibadan: University Press PLC.
www.education.gov.ng
www.waeconline.org.ng

Instructional Materials

The teacher will teach this lesson with the aid of:

Different types of maps (e.g., political, physical, topographical).
An atlas.
Ruler or measuring tape.
Chalkboard and chalk.

Rationale for the Lesson

This lesson helps pupils understand how to read and interpret maps, which is an important skill for navigation and understanding geographical information. It enables pupils to comprehend spatial relationships and make informed decisions about locations and distances in their environment and beyond.

Prerequisite/Previous Knowledge

Pupils are assumed to have prior knowledge of basic geographical concepts such as directions (North, South, East, West) and understanding of locations from their earlier studies.

Lesson Content/Board Summary

MAPWORK/READING

Meaning of Maps

A map is a flat representation of the Earth’s surface or a part of it, showing geographical features such as landforms, water bodies, settlements, and political boundaries. Maps use symbols, colours, and scale to represent real-world features.

Types of Maps

Maps can be classified into different types based on their purpose and the information they display. The following are common types of maps:

Topographical Maps: Show detailed surface features, including relief, drainage, vegetation, and human settlements.
Thematic Maps: Focus on a specific theme or subject, such as climatic maps, population density maps, geological maps, or economic maps.
Political Maps: Show governmental boundaries of countries, states, and counties, along with the location of major cities.
Physical Maps: Show natural landscape features like mountains, rivers, lakes, and oceans.
Cadastral Maps: Show property boundaries and land ownership details, often used for land administration.

Uses of Maps

Maps are used for various purposes by different individuals and organizations. The following are some uses of maps:

For navigation and route planning (e.g., by pilots, sailors, drivers).
For urban and regional planning and development.
For military operations and strategic planning.
For weather forecasting and climate studies.
For geological surveys and resource exploration.
For educational purposes in schools and research.
For tourism and recreational activities.

Definition of Scale

Map scale refers to the ratio between a distance on a map and the corresponding distance on the ground. It indicates how much the real world has been reduced to fit on the map.

Types of Scale

Map scales are generally represented in three main ways. The following are the types of scale:

Statement Scale (or Verbal Scale): Expressed in words, e.g., “1 cm to 10 km.”
Representative Fraction (RF): Expressed as a ratio or fraction, e.g., 1:100,000 or 1/100,000. It means one unit on the map represents 100,000 of the same units on the ground.
Linear Scale (or Graphical Scale): A line divided into segments to represent distances on the ground. It is drawn directly on the map.

Attributes of Map Scales

The attributes of map scales include:

Ratio: It is a ratio between map distance and ground distance.
Consistency: The scale must be consistent across the entire map.
Units: It can be expressed in different units, but RF is unitless.
Reduction: All maps are reductions of the real world.

Small Scale and Large Scale Maps

Maps are classified as small or large scale based on the level of detail they show:

Small Scale Maps: Show a large area with less detail. They have a small representative fraction (e.g., 1:1,000,000). Examples include world maps or continent maps.
Large Scale Maps: Show a small area with greater detail. They have a large representative fraction (e.g., 1:10,000). Examples include city maps or cadastral maps.

Merits and Demerits of Scales

The use of different scales has its advantages and disadvantages:

Merits of Scales:

Enable accurate measurement of distances on a map.
Help to determine the actual size of features on the ground.
Allow for representation of large areas on a manageable sheet of paper.

Demerits of Scales:

Can be distorted, especially in large areas, due to the Earth’s curvature.
May lead to overgeneralization or omission of small features on small scale maps.
Requires careful interpretation to avoid errors in measurement.

Conversion of One Type of Scale to Another

Map scales can be converted from one form to another, for example, from statement scale to representative fraction, or from representative fraction to linear scale. This often involves understanding the units of measurement and performing simple mathematical calculations, such as converting kilometres to centimetres (1 km = 100,000 cm).

Teaching Methods/Instructional Techniques

Discussion, Lecture, Demonstration, Question and Answer, Visual Aids

Instructional Procedures

Step 1: Introduction

Time: 5 minutes
Teaching Skill: Set Induction
Teacher’s Activity: The teacher greets the pupils and asks them to mention what they understand by a map and its importance. The teacher then introduces the topic: Mapwork/Reading.
Pupils’ Activity: Pupils respond to the teacher’s questions and listen attentively to the introduction.
Learning Point: Pupils recall prior knowledge related to maps and are introduced to the lesson topic.

Step 2: Meaning and Types of Maps

Time: 10 minutes
Teaching Skill: Explanation/Demonstration
Teacher’s Activity: The teacher defines a map and explains its basic characteristics. Using various maps (political, physical, topographical) and an atlas, the teacher helps pupils identify and explain different types of maps, highlighting the information each map type conveys.
Pupils’ Activity: Pupils observe the maps, participate in identifying them, and take notes on the meaning and types of maps.
Learning Point: Pupils understand what a map is and can identify different types of maps.

Step 3: Uses of Maps and Definition of Scale

Time: 7 minutes
Teaching Skill: Discussion/Explanation
Teacher’s Activity: The teacher leads a discussion on the various uses of maps in everyday life and different fields. The teacher then introduces the concept of map scale and provides a clear definition.
Pupils’ Activity: Pupils contribute to the discussion on map uses and write down the definition of map scale.
Learning Point: Pupils understand the practical applications of maps and the fundamental concept of map scale.

Step 4: Types of Scale and Attributes

Time: 8 minutes
Teaching Skill: Demonstration/Explanation
Teacher’s Activity: The teacher explains and demonstrates the three types of map scales (statement, representative fraction, linear) using examples from the maps and chalkboard. The teacher also explains the key attributes of map scales.
Pupils’ Activity: Pupils observe the examples, ask questions for clarification, and note the different types and attributes of scales.
Learning Point: Pupils can identify and differentiate between the types of map scales and understand their characteristics.

Step 5: Small and Large Scale Maps

Time: 5 minutes
Teaching Skill: Explanation/Differentiation
Teacher’s Activity: The teacher explains the difference between small scale and large scale maps, using examples to illustrate how they represent different levels of detail and extent of area. The teacher clarifies the relationship between the representative fraction and the scale size.
Pupils’ Activity: Pupils listen, ask questions, and differentiate between small and large scale maps.
Learning Point: Pupils understand the distinction between small and large scale maps and what each represents.

Step 6: Merits and Demerits of Scales & Conversion

Time: 5 minutes
Teaching Skill: Explanation/Problem-solving
Teacher’s Activity: The teacher explains the advantages and disadvantages of using different map scales. The teacher then briefly explains the principle of converting one type of scale to another, for example, converting a statement scale to a representative fraction, and provides a simple example.
Pupils’ Activity: Pupils listen to the explanation, try to follow the conversion example, and take notes.
Learning Point: Pupils grasp the merits and demerits of scales and the basic idea of scale conversion.

Step 7: Evaluation/Review

Time: 5 minutes

Teaching Skill: Questioning/Assessment

Teacher’s Activity: The teacher evaluates the learning by asking the following questions:

Define a map.
Mention three types of maps.
State two uses of maps.
Explain the difference between a large scale and a small scale map.

Pupils’ Activity: Pupils answer orally and in writing.

Learning Point: Pupils demonstrate understanding of the lesson.

Step 8: Conclusion

Time: 5 minutes
Teaching Skill: Summarization/Consolidation
Teacher’s Activity: The teacher summarizes the key points of the lesson, emphasizing the importance of maps and scales. The teacher assigns homework, asking pupils to find a local map and identify its scale and type.
Pupils’ Activity: Pupils listen to the summary, ask any final questions, and note down the homework.
Learning Point: Pupils consolidate their understanding of mapwork and apply their knowledge.

Lesson Keywords

Map – A flat representation of the Earth’s surface or a part of it.
Scale – The ratio between a distance on a map and the corresponding distance on the ground.
Topographical Map – A map showing detailed surface features, including relief.
Representative Fraction (RF) – A map scale expressed as a ratio, e.g., 1:50,000.
Linear Scale – A graphic scale drawn on a map to measure distances.

Differentiation

For pupils who grasp concepts quickly, the teacher can provide more complex map reading exercises or ask them to research historical maps. For pupils who need additional support, the teacher can provide simplified diagrams and offer one-on-one guidance during practical activities, focusing on basic identification and definitions.

Note for teachers using this lesson plan

Ensure that a variety of maps are available for demonstration. Encourage pupils to actively participate in identifying map features and understanding scale concepts. Practical exercises involving rulers and maps can greatly enhance understanding.