TOPIC: STRAIGHT LINES, CURVES AND PLANE SHAPES
A: TEACHING AND LEARNING MATERIALS
- Ruler.
- Drawing sheets.
- Shape charts.
- Coloured pencils.
- Classroom objects.
B: REFERENCE MATERIALS
- Scheme of work.
- Recommended Mathematics textbook for Primary 3.
- Online educational resources.
C: PREVIOUS KNOWLEDGE
The pupils can identify squares, rectangles, triangles and circles and know some of their properties.
D: PERFORMANCE OBJECTIVES
By the end of the lesson, pupils should be able to:
- Identify straight lines.
- Identify curved lines.
- Draw straight lines with a ruler.
- Draw common plane shapes.
- Identify plane shapes in their environment.
E: CONTENT
Straight Line
A straight line does not bend.
Example:
────────
A ruler can be used to draw a straight line.
Curved Line
A curved line bends.
Example:
〰️
The edge of a circle is curved.
Plane Shapes
Plane shapes are flat shapes.
Examples include:
Square
⬜
A square has 4 equal sides.
Rectangle
▭
A rectangle has 4 sides.
Triangle
🔺
A triangle has 3 sides.
Circle
⭕
A circle has a curved edge and no corner.
Shapes Around Us
Examples:
- door – rectangle
- clock face – circle
- floor tile – square
- road sign – may be a triangle
F: LESSON PRESENTATION
F1: Teachers’ Activities
- Introduces straight and curved lines.
- Draws examples on the board.
- Demonstrates drawing straight lines with a ruler.
- Revises common plane shapes.
- Demonstrates how to draw each shape.
- Identifies shapes in classroom objects.
F2: Pupils’ Activities
- Identify straight lines.
- Identify curved lines.
- Draw straight lines with rulers.
- Draw squares, rectangles, triangles and circles.
- Identify shapes of classroom objects.
- State simple properties of shapes.
G: CONCLUSION
The teacher revises straight lines, curved lines and plane shapes and corrects pupils where necessary.
The teacher encourages pupils to observe different shapes around them.
H: EVALUATION GUIDE
Pupils should be able to answer the following questions:
- What is a straight line?
- What is a curved line?
- Name four plane shapes.
- How many sides does a triangle have?
- Which shape has no corners?
- What instrument is used to draw a straight line?
- What shape is the face of a round wall clock?