Plane Shapes Mathematics Primary 4 Third Term Lesson Notes Week 2

Detailed Lesson Plan

Subject: Mathematics

Class: Primary 4

Term: Third Term

Week: 2

Topic: Plane Shapes

Sub-topic: Identifying and Describing Plane Shapes

Duration: 40 minutes

Behavioural Objectives:

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

1. Define plane shapes.
2. Identify different plane shapes.
3. Describe the attributes of plane shapes.
4. Compare different plane shapes.

Key Words:

• Plane shape
• Side
• Corner
• Triangle
• Rectangle
• Square
• Circle

Entry Behaviour: Pupils are familiar with basic shapes such as circles and squares.

Learning Resources and Materials:

• Chart paper
• Shape cutouts (triangle, rectangle, square, circle)
• Drawing paper and pencils
• Flashcards with different shapes

Building Background / Connection to Prior Knowledge: Begin by asking pupils to name any shapes they already know. Show examples of common objects (e.g., a book, a clock) and ask which shapes they see.

Embedded Core Skills:

• Critical thinking
• Observation
• Comparison
• Communication

Learning Materials:

• Lagos State Scheme of Work
• Mathematics textbook
• Shape cutouts
• Drawing tools

Instructional Materials:

• Chart with definitions and examples of plane shapes
• Flashcards with shape names
• Drawing paper and pencils

Content:

Definition: A plane shape is a flat, two-dimensional figure with length and breadth.

Examples:

1. Triangle: A shape with three sides and three corners.
2. Rectangle: A shape with four sides and four corners; opposite sides are equal.
3. Square: A shape with four equal sides and four corners.
4. Circle: A round shape with no sides and no corners.

Definition: A plane shape is a closed, two-dimensional figure. It has length and breadth, but no depth. Plane shapes are flat figures.

Attributes of Plane Shapes: Different plane shapes have different attributes, such as the number of sides and corners.

• Side: A straight line that makes part of the shape.
• Corner: Where two sides meet.

Examples of Plane Shapes:

1. Triangle: A shape with three sides and three corners.
   • Example: 🔺
   • “A triangle has 3 sides and 3 corners.”
2. Rectangle: A shape with four sides and four corners. Opposite sides are the same length.
   • Example: ▭
   • “A rectangle has 4 sides and 4 corners. Opposite sides are equal.”
3. Square: A plane shape in which all four sides are of equal length.
   • Example: ▪️
   • “A square has 4 sides of equal length and 4 corners.”
4. Circle: A round shape that has no sides or corners.
   • Example: ⚫
   • “A circle has no sides and no corners.”

Evaluation

1. What are plane shapes?
   • Plane shapes are closed, two-dimensional figures.
2. Give four examples of plane shapes.
   • Triangle, Rectangle, Square, Circle.
3. Describe a triangle.
   • A triangle has three sides and three corners.
4. What is a square?
   • A square is a plane shape with four equal sides and four corners.
5. What is a rectangle?
   • A rectangle is a shape with four sides and four corners. Opposite sides are equal in length.

Class Activity Discussion on Plane Shapes

1. What is a plane shape?
   • A plane shape is a flat, two-dimensional figure with length and breadth.
2. What is a side in a plane shape?
   • A side is a straight line that forms part of the shape.
3. What is a corner in a plane shape?
   • A corner is where two sides meet.
4. How many sides does a triangle have?
   • A triangle has three sides.
5. How many corners does a triangle have?
   • A triangle has three corners.
6. What is a rectangle?
   • A rectangle is a shape with four sides and four corners.
7. How are the sides of a rectangle related?
   • Opposite sides of a rectangle are of the same length.
8. What is a square?
   • A square is a shape with four equal sides and four corners.
9. How many sides does a square have?
   • A square has four sides.
10. How many corners does a square have?
    • A square has four corners.
11. What is a circle?
    • A circle is a round shape with no sides and no corners.
12. How many sides does a circle have?
    • A circle has no sides.
13. How many corners does a circle have?
    • A circle has no corners.
14. What are the differences between a rectangle and a square?
    • A rectangle has opposite sides of the same length; a square has all sides of equal length.
15. Can a shape with three sides be called a rectangle?
    • No, a shape with three sides is called a triangle, not a rectangle.

Fill-in-the-Blank Questions on Plane Shapes

1. A plane shape is a __________ figure.
   • a) three-dimensional
   • b) two-dimensional
   • c) four-dimensional
   • d) five-dimensional
2. A side is a __________ line that makes part of the shape.
   • a) curved
   • b) wavy
   • c) straight
   • d) dotted
3. A corner is where two __________ meet.
   • a) points
   • b) circles
   • c) sides
   • d) lines
4. A triangle has __________ sides.
   • a) two
   • b) three
   • c) four
   • d) five
5. A triangle has __________ corners.
   • a) one
   • b) two
   • c) three
   • d) four
6. A rectangle has __________ sides.
   • a) two
   • b) three
   • c) four
   • d) five
7. A rectangle has __________ corners.
   • a) one
   • b) two
   • c) three
   • d) four
8. Opposite sides of a rectangle are the __________ length.
   • a) same
   • b) different
   • c) longest
   • d) shortest
9. A square has __________ sides.
   • a) two
   • b) three
   • c) four
   • d) five
10. All sides of a square are __________ in length.
    • a) different
    • b) equal
    • c) half
    • d) twice
11. A square has __________ corners.
    • a) two
    • b) three
    • c) four
    • d) five
12. A circle has __________ sides.
    • a) zero
    • b) one
    • c) two
    • d) three
13. A circle has __________ corners.
    • a) zero
    • b) one
    • c) two
    • d) three
14. The shape with no sides and no corners is a __________.
    • a) triangle
    • b) square
    • c) rectangle
    • d) circle
15. Which shape has four sides of equal length?
    • a) Triangle
    • b) Rectangle
    • c) Square
    • d) Circle

Presentation:

Step 1: Revision

• The teacher revises the previous topic, “Basic Shapes in the Environment.”
• Ask pupils to recall the shapes they see around them.

Step 2: Introduction to New Topic

• Display the chart with definitions and examples of plane shapes.
• Explain the term “plane shape” and its importance.

Step 3: Class Contributions

• Allow pupils to name and describe shapes they know.
• Show shape cutouts and ask pupils to identify and describe them.

Teacher’s Activities:

• Display the chart and explain each shape.
• Use flashcards to quiz pupils on shape names.
• Demonstrate drawing each shape on the board.

Learners’ Activities:

• Participate in naming and describing shapes.
• Match flashcards with shape cutouts.
• Draw and label plane shapes on their drawing paper.

Assessment:

• Distribute flashcards and ask pupils to identify and describe the shapes.
• Pupils will complete a worksheet with fill-in-the-blank questions about plane shapes.

Ten Evaluation Questions:

1. What is a plane shape?
2. Name a shape with three sides.
3. How many corners does a triangle have?
4. Describe a rectangle.
5. What is unique about the sides of a square?
6. How many sides does a circle have?
7. How many corners does a circle have?
8. Compare a rectangle and a square.
9. Give an example of a plane shape in real life.
10. How many sides does a square have?

Conclusion:

• The teacher reviews the key points of the lesson.
• Pupils display their drawings and describe the shapes.
• The teacher goes around to check pupils’ work and provide feedback.

This detailed lesson plan ensures that pupils understand plane shapes and their attributes through engaging activities and clear explanations.