Subject : Mathematics
Class : Basic 6 / Primary 6 /Grade 6
Term : Third Term / 3rd Term
Week : Week 6
Topic : Types of Angles and Shapes
Behavioural Objectives : At the end of the lesson, the pupils should be able to
- Explain the meaning of triangles
- Give examples of triangles
- Mention types of triangles
- Say the properties of triangles
Previous Knowledge : Pupils have previous knowledge of Polygons and plane figure that was taught in the previous lesson
Instructional Materials :
- Pictures
- Wall Posters
- Related Online Videos
- Role Playing
Reference Materials
- Scheme of Work
- Online Information
- Textbooks
- Workbooks
- 9 Year Basic Education Curriculum
Content :
Types of Angles and Shapes
Quadrilaterals
These are 4-sided plane shapes. They are rectangles, parallelograms, squares, rhombus,
kite and trapezium.
Rectangles
Opposite sides are equal.
Each of the interior angle is 90°.
Opposite sides are parallel
AB // CD
AD // BC
The two diagonals are AC and BD. Is AC = BD?
The two lines of symmetry are MN and ST. Is MN = ST?
Parallelograms
Opposite sides are equal and parallel.
A B
D C
None of the angles is equal to 90°
Is diagonal AC = BD?
How many lines of symmetry has parallelogram ABCD?
Squares
Opposite sides are equal parallel.
A B
D C
AB = CD = AD = BC
All the sides are equal.
Each of the interior angle is 90°.
Draw the lines of symmetry. How many are they?
Is AC = BD?
Rhombus
Opposite sides are equal and parallel. A B
C D
AB = CD and AD = BC
All the sides are equal.
AB = CD = AD = BC
None of the angles is equal to 90°.
Draw the diagonals AC and BD.
Measure AC and BD.
Is AC = BD?
How many lines of symmetry does a rhombus have?
Kite
Opposite sides are not equal.
How many lines of symmetry does a kite have?
Name them.
Draw the diagonals. How many are they?
Name the diagonals.
None of the interior angles is equal to 90°.
.
Trapezium
A pair of the opposite sides are parallel.
Two of the interior angles may be 90°.
How many lines of symmetry does a trapezium have?
These are two different types; see fig 1 and fig 2.
Draw the diagonals. How many are they?
Pentagon
A regular pentagon has 5 equal sides
and angles.
Here AB = BC = CD = DE = EA.
How many diagonals does a pentagon
have?
How many lines of symmetry does a
pentagon have?
Hexagon
A regular hexagon has 6 equal sides and
angles.
How many lines of symmetry does pentagon ABCDEF have?
Heptagon
A regular heptagon has 7 equal sides and angles.
Octagon
A regular octagon has 8 equal sides and
angles.
.
Properties of different prisms
Properties of a cube
It has 6 equal faces. Each face is a square
It has 12 straight edges
All the edges are equal
It has 8 vertices (corners).
Properties of a cuboid
A cuboid has 6 faces
Some faces are either a
square or a rectangle
It has 12 straight edges
It has 8 vertices (corners).
Properties of a cylinder
A cylinder has 2 plane faces
The 2 plane faces are circular
It has 1 curved face
It has 2 curved edges.
Properties of a triangular prism
Presentation
The topic is presented step by step
Step 1:
The class teacher revises the previous topics
Step 2.
He introduces the new topic
Step 3:
The class teacher allows the pupils to give their own examples and he corrects them when the needs arise
Evaluation :
Assignment :
Prepare for the next lesson by reading about
Types of Angles and Shapes
About The Author
Edu Delight Tutors
Am a dedicated educator with a passion for learning and a keen interest in technology. I believe that technology can revolutionize education and am committed to creating an online hub of knowledge, inspiration, and growth for both educators and students. Welcome to Edu Delight Tutors, where learning knows no boundaries.
