Class: Junior Secondary School 3 (JSS3, JSS 3)
Term: 2nd Term
Week: 1
Age: 14 years
Duration: 45 minutes
Subject: Basic Science And Technology
Curriculum Theme: Computer Studies
Previous Lesson:
Topic: Graphics (Part 1)
Subject Matter: Creating Graphs – Line graphs, Histograms, Pie charts, Legends

Specific Objectives

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

Cognitive Domain:
(a) Explain the meaning of graphics and graphs.
(b) Identify and describe line graphs, histograms and pie charts.
Affective Domain:
(a) Show interest in accurate presentation of data using graphs.
Psychomotor Domain:
(a) Draw simple line graphs, histograms and pie charts from given data.
Social Domain:
(a) Cooperate with classmates during group graph-drawing activities.

Reference Materials

The following resources was used in planning this lesson:

9 Years Basic Education Curriculum
Lagos State Unified Scheme of work for Junior Secondary Schools
Online Information from: Math Is Fun – Graphs Index (https://www.mathsisfun.com/data/)
Relevant Textbooks

Instructional Materials

The teacher will teach this lesson with the aid of:

Graph papers
Rulers
Coloured pencils
Sample data tables
Charts showing different types of graphs

Rationale for the Lesson

This lesson helps pupils understand how information can be clearly presented and interpreted using graphical representations.

Prerequisite/Previous Knowledge

Pupils have prior knowledge of basic numbers, tables and simple data representation.

Lesson Content/Board Summary

Lesson Content

Graphics – Creating Graphs

Meaning of Graphics and Graphs

Graphics are visual representations of information using drawings, diagrams or images. Graphs are a type of graphics used to display numerical data clearly for easy understanding and comparison.

Line Graph

A line graph shows how values change over time or in sequence using points joined by straight lines.

Examples are:

Temperature changes during the day
Growth of a plant over weeks

Histogram

A histogram is a bar graph used to represent grouped or continuous data. The bars touch each other to show there are no gaps in the data.

Examples include:

Distribution of students’ scores
Heights of pupils in a class

Pie Chart

A pie chart is a circular graph divided into sectors to show parts of a whole. Each sector represents a proportion of the total.

Examples are:

School budget allocation
Time spent on daily activities

Legend

A legend is a key that explains the symbols, colours or patterns used in a graph or chart.

They are:

Colour indicators
Symbol explanations

Teaching Methods/Instructional Techniques:

To deliver this lesson,the teacher will adopt the following methods: Lecture, Explanation, Demonstration, Discussion, Visual Aids, Group Work

Instructional Procedures

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

Step 1: Introduction

Time: 5 minutes
Teaching Skill: Set Induction
Teacher’s Activity: The teacher asks pupils questions about charts they have seen in books or newspapers and introduces graphics.
Pupils’ Activity: Pupils respond to questions and share observations.
Learning Point: Graphics are used to present information visually.

Step 2: Meaning of Graphics and Graphs

Time: 7 minutes
Teaching Skill: Explanation
Teacher’s Activity: The teacher explains graphics and graphs with examples on the board.
Pupils’ Activity: Pupils listen and take note.
Learning Point: Graphs are visual tools for representing data.

Step 3: Types of Graphs

Time: 15 minutes
Teaching Skill: Demonstration
Teacher’s Activity: The teacher explains line graphs, histograms and pie charts using charts.
Pupils’ Activity: Pupils observe and ask questions.
Learning Point: Different graphs are used for different types of data.

Step 4: Legend

Time: 5 minutes
Teaching Skill: Explanation
Teacher’s Activity: The teacher explains the meaning and use of legends in graphs.
Pupils’ Activity: Pupils identify legends in sample graphs.
Learning Point: Legends help explain symbols and colours in graphs.

Step 5: Note-Taking

Time: 5 minutes
Teaching Skill: Chalkboard Summary
Teacher’s Activity: The teacher writes the board summary for pupils to copy.
Pupils’ Activity: Pupils copy the lesson content.
Learning Point: Proper notes aid understanding and revision.

Step 6: Evaluation/Review

Time: 5 minutes
Teaching Skill: Questioning
Teacher’s Activity: The teacher evaluates the learning by asking the following questions:

Define graphics.
State two uses of line graphs.
What is a histogram?
Explain a legend.
Pupils’ Activity: Pupils answer questions orally.
Learning Point: Assessment checks pupils’ understanding.

Step 7: Conclusion

Time: 3 minutes
Teaching Skill: Reinforcement
Teacher’s Activity: The teacher summarizes the lesson and corrects errors.
Pupils’ Activity: Pupils listen attentively.
Learning Point: Graphics make data easy to understand.

Lesson Keywords

Graphics – visual representation of information
Line graph – graph showing change over time
Histogram – graph for grouped data
Pie chart – circular graph showing parts of a whole
Legend – key explaining symbols or colours

Differentiation

Fast learners draw complete graphs, while slower learners label prepared graph templates.

Note for teachers using this lesson plan

Use real-life data to make the lesson practical and interesting. Emphasize accuracy in drawing graphs.