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Session 38: Parallel lines

Session Title

Parallel Palooza

Objective

By the end of the lesson, students will be able to:


  1. Define parallel lines

  2. Identify and draw parallel lines

  3. Distinguish between parallel and non-parallel lines in everyday objects

Concept

Parallel lines -Geometry

Materials Required

  1. Whiteboard and markers

  2. Ruler and pencil for each student

  3. Chart paper with visuals [Real-life objects (books, railway track images, notebook lines)]

  4. Worksheets for practice

Methodology

Activity oriented

Session Duration

 90 Minutes

Intro  Activity  (20 minutes )

"Parallel or Not?"

How to Play:

Step 1: Human Lines

Divide students into groups of 4–5.

Ask each group to form two straight lines of students standing side by side, facing the same direction.

Say: "Pretend you are lines on the ground. Are you standing the same distance apart all the way? If yes, you’re parallel lines!"

Step 2: Line Detective

Now change it up! Ask one line to slant slightly or move closer at one end.

Ask the class: "Are they still parallel?"

Encourage students to explain why or why not.

Step 3: Rapid Fire Round

Show quick drawings or hold up objects (e.g., a notebook, scissors, a triangle).

Students shout "Parallel!" or "Not Parallel!"

Main Activity (65 minutes)

Explanation    (15 minutes)

Definition and Properties:

  • Parallel lines are lines in a plane that never meet, no matter how far they are extended.
  • They are always the same distance apart.
  • Use a whiteboard to draw examples and non-examples.

Types of  Lines ( 10 minutes )

Teach students the difference

  • Parallel lines : never meet.
  • Perpendicular line: will cross to make right angle 
  • Intersecting lines:  cross at one point, but do not make right angle

Shapes with Parallel Lines  (10 minutes )

Basic intro to 2D shapes that have parallel lines

  • Rectangle (2 pairs)
  • Square (2 pairs)
  • Parallelogram (2 pairs)
  • Trapezium (1 pair)

WORKSHEET:-  (10 minutes )

ANGLES  (15 minutes) (Draw the picture given below on a chart)

Review Questions (5 minutes)

  1. What are parallel lines?
  2. Which of the following are examples of parallel lines?
    a) Railway tracks
    b) The sides of a triangle
    c) Clock hands at 3 o’clock
  3. Lines that never meet, no matter how far they are extended, are called ____ lines.

Follow up Tasks (5 minutes)

  • What is the symbol used to show that two lines are parallel?
    (Hint: It's like two short straight lines)
  • Can parallel lines exist in three-dimensional space?
  • How can you tell if two lines are parallel using a ruler or set square?

Expected Learning  Outcome:

Knowledge building-

  • Conceptual understanding

Skill Building-

  • Comparing line types

  • Problem solving

Resources

https://drive.google.com/file/d/1lmPVWns51f_Tt7qB-jpZo_DT2vpSGrFZ/view?usp=drivesdk

 

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