Mathematics - Primary 5 - Lines, Angles, and Bearings

Term: 3^rd Term

Week 2

Class: Primary 5
Age: 10 years
Duration: 40 minutes × 5 periods
Date:
Subject: Mathematics
Topic: Lines, Angles, and Bearings

SPECIFIC OBJECTIVES:

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

Identify and draw different types of lines (parallel and perpendicular).
Measure and draw angles using a protractor.
Identify and calculate complementary, supplementary, and opposite angles.
Tell directions accurately using bearings.
Apply the use of angles and lines to real-life situations (e.g., roads, compasses, designs).
Solve quantitative aptitude problems involving lines, angles, and bearings.

INSTRUCTIONAL TECHNIQUES:

Demonstration
Group activities
Guided practice
Use of teaching aids
Interactive questioning

INSTRUCTIONAL MATERIALS:

Ruler and set squares
Protractor
Chart of different angles and lines
Flashcards with angle and line problems
Compass and direction chart
Real-life images (roads, clock, compass)

INSTRUCTIONAL PROCEDURES

PERIOD 1 & 2

PRESENTATION

Step	Teacher’s Activity	Pupil’s Activity
STEP 1 – INTRODUCTION	Introduces types of lines (parallel and perpendicular) using real-life examples (e.g., zebra crossing, walls, railway lines).	Pupils observe, identify and mention other examples of lines around them.
STEP 2 – EXPLANATION	Explains and shows the difference between parallel and perpendicular lines using charts and drawings.	Pupils listen, observe and ask questions.
STEP 3 – DEMONSTRATION	Demonstrates how to draw parallel and perpendicular lines using ruler and set square.	Pupils draw along using their tools.
STEP 4 – NOTE TAKING	Pupils take notes on definitions and characteristics of parallel and perpendicular lines.	Pupils copy notes and examples.

NOTE (On the Board):

Types of Lines

Parallel Lines: Lines that never meet, e.g., =
Perpendicular Lines: Lines that meet at 90° angles, e.g., L-shape
Examples:
Railway tracks = parallel
Edges of books = perpendicular

EVALUATION:

Identify parallel and perpendicular lines in the classroom.
Draw two sets of each line type.

CLASSWORK:

Draw 3 sets of parallel and 3 sets of perpendicular lines.

ASSIGNMENT:

Find and draw at least 3 examples of parallel and perpendicular lines at home.

CONCLUSION:

The teacher reviews key points and praises participation.

PERIOD 3

PRESENTATION

Step	Teacher’s Activity	Pupil’s Activity
STEP 1 – INTRODUCTION	Recaps lines and introduces angles with a wall clock and door hinges.	Pupils identify and describe angles seen around them.
STEP 2 – EXPLANATION	Explains types of angles: right, acute, obtuse, complementary, supplementary, and opposite.	Pupils listen and ask questions.
STEP 3 – DEMONSTRATION	Demonstrates how to measure and draw angles using a protractor.	Pupils use protractors to draw and measure angles.
STEP 4 – NOTE TAKING	Pupils take notes on types of angles and how to use protractors.	Pupils copy notes.

NOTE (On the Board):

Types of Angles

Right Angle = 90°
Acute Angle = less than 90°
Obtuse Angle = more than 90°
Complementary Angles = Add up to 90°
Supplementary Angles = Add up to 180°
Opposite Angles = Equal

EVALUATION:

Draw and label different types of angles.
Identify angle types in given diagrams.

CLASSWORK:

Measure given angles using a protractor.
Solve problems involving complementary and supplementary angles.

ASSIGNMENT:

List 5 places you see angles in real life (doors, bridges, etc.) and describe them.

CONCLUSION:

The teacher summarizes angle types and praises neat angle drawings.

PERIOD 4

PRESENTATION

Step	Teacher’s Activity	Pupil’s Activity
STEP 1 – INTRODUCTION	Introduces the topic of bearings using a compass.	Pupils observe and participate in demonstration with compass.
STEP 2 – EXPLANATION	Explains the concept of direction using degrees (e.g., North = 0° or 360°, East = 90°, South = 180°, West = 270°).	Pupils listen and practice with the compass chart.
STEP 3 – DEMONSTRATION	Demonstrates how to read and tell direction using bearings.	Pupils tell directions from one object to another in class.
STEP 4 – NOTE TAKING	Pupils take notes on bearing and direction.	Pupils copy from the board.

NOTE (On the Board):

Bearings and Directions:

Bearings are measured in degrees clockwise from North.
North = 0°/360°, East = 90°, South = 180°, West = 270°
Examples:
From school gate to classroom = 90° (East)

EVALUATION:

Ask pupils to tell the bearing between objects in class.
Draw a direction chart using 4 cardinal points.

CLASSWORK:

Answer questions on direction and bearings.

ASSIGNMENT:

Observe your environment and write bearings between 3 points (e.g., from home to church).

CONCLUSION:

The teacher appreciates pupils’ effort and encourages them to observe directions more carefully.

PERIOD 5

PRESENTATION

Step	Teacher’s Activity	Pupil’s Activity
STEP 1 – INTRODUCTION	Recaps angles, lines, and bearings, introduces real-life applications.	Pupils listen and discuss examples from real life.
STEP 2 – EXPLANATION	Solves word problems involving lines, angles, and bearings (e.g., maps, construction, sports fields).	Pupils observe and solve problems with the teacher.
STEP 3 – GROUP WORK	Groups work on quantitative aptitude problems involving: Parallel and perpendicular lines Complementary/supplementary angles Bearings in maps	Pupils work in groups to solve and present solutions.
STEP 4 – NOTE TAKING	Pupils note down worked examples for reference.	Pupils write solutions and tips.

NOTE (On the Board):

Real-Life Uses:

Engineers use angles in building.
Bearings help in navigation.
Angles help in sports like football, basketball.

EVALUATION:

Solve three real-life math problems involving lines and angles.

CLASS ACTIVITY:

Each group solves a set of quantitative aptitude questions.

CLASSWORK:

Solve 5 questions involving complementary angles, perpendicular lines, and bearings.

ASSIGNMENT:

Create a simple road map using straight lines and label directions using bearings.

CONCLUSION:

The teacher praises pupils’ creativity and teamwork. Encourages them to look for lines and angles in their environment.

SUMMARY OF LESSON:

This week, pupils will explore lines (parallel and perpendicular), angles (complementary, supplementary, opposite), and bearings through real-life applications and problem-solving. They will learn to use instruments like protractors, rulers, and compasses to measure and draw, and apply these concepts in practical contexts like roads, maps, and buildings.