Class: Junior Secondary School 1 (JSS1, JSS 1)
Term: 2nd Term
Week: 8
Age: 12 years
Duration: 45 minutes
Subject: Basic Science And Technology
Curriculum Theme: Basic Technology
Previous Lesson: Board Practice and Freehand Sketching
Topic: Freehand Sketching
Subject Matter: Freehand sketches of simple workshop tools and random objects

Specific Objectives

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

Cognitive Domain:
(a) State the meaning and purpose of freehand sketching.
(b) Identify simple workshop tools and random objects that can be sketched freehand.
Affective Domain:
(a) Appreciate the importance of neatness and accuracy in sketching.
Psychomotor Domain:
(a) Produce neat freehand sketches of simple tools and objects using proper proportions.
Social Domain:
(a) Work cooperatively in pairs or groups to discuss and sketch assigned objects.

Reference Materials

The following resources were used in planning this lesson:

9 Years Basic Education Curriculum
Lagos State Unified Scheme of work for Junior Secondary Schools
Illinois State Board of Education – Freehand Sketching
Relevant Textbooks

Instructional Materials

The teacher will teach this lesson with the aid of:

Drawing paper and plain sheets
Pencils, erasers, and rulers
Charts or posters of simple workshop tools
Sample freehand sketches
Actual workshop tools such as hammer, spanner, screwdriver, pliers, etc.

Rationale for the Lesson

This lesson helps pupils develop the skill of expressing technical ideas visually and accurately through freehand sketches of tools and objects used in everyday life and workshops.

Prerequisite/Previous Knowledge

Pupils have been introduced to drawing instruments and can recognize various workshop tools. They have also practiced basic lines and shapes in earlier lessons.

Lesson Content/Board Summary

Freehand Sketching

Freehand sketching is the art of drawing objects without using instruments like rulers or compasses. It helps to express ideas quickly and accurately in technical drawing and design. It forms the foundation for detailed mechanical and engineering drawings.

Importance of Freehand Sketching

Freehand sketching is very useful in both learning and practical work.
The following are the importance of freehand sketching:

It helps to develop drawing and observation skills.
It allows designers and engineers to communicate ideas quickly.
It helps in planning and visualizing objects before construction.
It encourages creativity and imagination.
It saves time when drafting ideas or diagrams.
It assists in explaining or presenting new designs clearly.

Simple Workshop Tools for Freehand Sketching

Workshop tools are instruments used to make, repair, or assemble items in the workshop. Pupils can practice freehand sketching using these simple tools.

Examples include:

Hammer
Spanner
Screwdriver
Pliers
File
Saw
Chisel
Measuring tape

Steps in Freehand Sketching

To produce a good freehand sketch, certain steps must be followed carefully.
They are:

Observe the object to be sketched carefully.
Study the main shape and structure of the object.
Lightly outline the shape using faint pencil strokes.
Add important details such as edges and curves.
Emphasize the main lines by darkening them after getting the right shape.
Erase unnecessary or rough lines to make the drawing neat.
Label the parts of the object if necessary.

Qualities of a Good Freehand Sketch

A good freehand sketch should be neat, clear, and accurate in proportion.
The following are the qualities of a good freehand sketch:

It must be clean and free of rough lines.
It should show correct proportions and shape.
It must be easily understood by others.
It should be properly labeled if necessary.
It should be bold and clear enough to be seen easily.

Teaching Methods/Instructional Techniques:

Discussion, Lecture, Explanation, Demonstration, Question and Answer, Guided Practice, Visual Aids

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: Teacher displays a hammer and a sketch of the same tool, asking pupils to identify the difference between the real object and the drawing. Leads discussion on how sketches can show ideas without tools.
Pupils’ Activity: Pupils respond and describe what they observe.
Learning Point: Pupils are introduced to the concept of freehand sketching.

Step 2: Meaning and Importance of Freehand Sketching

Time: 8 minutes
Teaching Skill: Explanation
Teacher’s Activity: Teacher explains what freehand sketching means and discusses its importance using examples of tools.
Pupils’ Activity: Pupils listen, take notes, and ask questions.
Learning Point: Pupils understand what freehand sketching is and why it is important.

Step 3: Simple Workshop Tools for Freehand Sketching

Time: 8 minutes
Teaching Skill: Discussion
Teacher’s Activity: Teacher displays charts and real tools such as hammers and pliers, explaining their uses and shapes.
Pupils’ Activity: Pupils identify and describe the tools shown.
Learning Point: Pupils can recognize tools suitable for sketching practice.

Step 4: Demonstration of Freehand Sketching Steps

Time: 12 minutes
Teaching Skill: Demonstration
Teacher’s Activity: Teacher demonstrates step-by-step how to sketch a simple tool (e.g., hammer) freehand on the board or chart.
Pupils’ Activity: Pupils observe and attempt to reproduce the sketch on their papers.
Learning Point: Pupils can follow the steps to produce a neat freehand sketch.

Step 5: Note-Taking

Time: 5 minutes
Teaching Skill: Explanation
Teacher’s Activity: Teacher writes the summarized notes on the board for pupils to copy.
Pupils’ Activity: Pupils copy notes neatly into their notebooks.
Learning Point: Pupils have a written record of key lesson points.

Step 6: Evaluation/Review

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

What is freehand sketching?
Mention three importance of freehand sketching.
List four simple tools that can be sketched freehand.
State two qualities of a good freehand sketch.
Pupils’ Activity: Pupils answer the questions orally.
Learning Point: Pupils demonstrate understanding of the lesson objectives.

Step 7: Conclusion

Time: 2 minutes
Teaching Skill: Reinforcement
Teacher’s Activity: Teacher summarizes the main points and encourages pupils to practice sketching objects around them at home.
Pupils’ Activity: Pupils listen and show appreciation for the lesson.
Learning Point: Pupils develop interest and confidence in sketching.

Home Task: Record two correct examples of Freehand Sketching from the lesson or home environment and explain each in your own words.

Lesson Keywords

Sketching – drawing without using instruments
Workshop Tools – tools used for making and repairing objects
Proportion – correct size relationship between parts of an object
Observation – careful study of an object before sketching
Outline – the outer shape or border of an object

Differentiation

Provide simplified sketching tasks for slower learners, while faster learners can sketch more complex tools. Offer guidance and encourage peer support within groups.

Note for teachers using this lesson plan

Ensure all pupils have drawing materials and observe correct posture while sketching. Emphasize neatness and correct proportions rather than perfect artistic ability.