Playing with Lines Chapter Notes | Mathematics for Class 2 (Joyful-Mathematics) PDF Download

Exploring Lines

Hey there, little explorers! Today, let's discover the fascinating world of lines.

Beach

Let's understand lines with help of a story.

Story: The Seashell Hunt

Once upon a time, a group of friends decided to go on a seashell hunt at the beach. They walked along the shore, and as they looked down, they noticed something interesting.

"Look!" exclaimed Sarah, pointing at the sand. "What are these lines?"

Lines forming on the beach

"These are lines made by the waves," explained Alex, the curious explorer of the group. "They come and go, leaving behind these beautiful lines in the sand."

As they continued their adventure, they found different types of lines:

• Standing Lines: Like the beach umbrellas standing tall and straight against the wind.

Umbrella forming Standing line

• Sleeping Lines: Imagine the seashells resting peacefully on the shore, forming sleeping lines.

Shells forming Sleeping lines

• Slanting Lines: Picture the crabs' trails as they move sideways, creating slanting lines in the sand.

Crab forming Slanting line

You already know about sleeping straight and slanting lines. Now, let's discover more about four special types of lines ✨

Vertical Line

A vertical line goes straight up and down, just like a tall tower reaching for the sky. Standing lines are called vertical lines. 

Vertical line

Example: Imagine a standing stick or a towering tree. They are like vertical lines, standing tall and straight.

Vertical tree & tower

Horizontal Line

A horizontal line goes straight across from left to right, like a line drawn on the ground. Sleeping lines are called Horizontal lines.

Horizontal Line

Example: Think of the horizon where the sky meets the land or a flat table. They are like horizontal lines, stretching from side to side.

Horizontal table

Here, the table has both Horizontal as well as Vertical lines. Legs of the table is Vertical where as top is Horizontal. Similarly, objects can have multiple lines as well. 

Slanting Line

A slanting line goes diagonally from one side to another, like a ramp going up a hill.

Slanting Line

Example: Picture a ladder leaning against a wall or a slide sloping down. They are like slanting lines, leaning or tilting.

Slanting ladder

Curved Line

A curved line is not straight; it bends or curves. 

Curved Lines

Example: Imagine a smiley face with its curved mouth or a rainbow arching across the sky. They are like curved lines, flowing and bending in a gentle curve.

Learn by Practicing - 1

Let's Try to Count Different Types of Lines!

Once upon a sunny day, Raju decided to explore his garden. 

• As he wandered among the trees and flowers, he stumbled upon a collection of sticks scattered on the ground. 
• Raju's eyes sparkled with curiosity as he thought, "Hmm, I wonder how many different types of sticks I have here!"

Let's see how Raju counted sticks;

Step 1: Identifying Straight Sticks

Raju began by picking up the sticks one by one. He noticed that some sticks were standing tall and straight, just like vertical lines. He gathered all these sticks and placed them in a neat pile.

Identify Straight sticks

Step 2: Identifying Curved Sticks

Next, Raju searched for sticks that were not straight but had gentle curves or bends, similar to curved lines. He carefully separated these curved sticks from the rest and arranged them beside the straight sticks.

Identifying Curved Sticks

Step 3: Counting the Sticks

With the straight sticks and curved sticks neatly arranged, Raju began counting. He counted each group of sticks one by one, starting with the straight sticks.

Counting straight sticks

• "1, 2, 3, 4... Wow, I have 6 straight sticks!" Raju exclaimed happily.
• Then, Raju moved on to count the curved sticks.

Counting curved sticks

• "1, 2, 3... Look, I have 3 curved sticks!" Raju exclaimed, delighted with his discovery.
• Raju learned that lines are not just in books or on paper but can be found in nature too, like in the sticks he found in his garden. 

Learn by Practicing - 2

Now Let's Help Charu in counting different types of lines. Look closely and tell how many vertical, horizontal, slanting, and curved lines you can find!  

1. Let's Start by finding & counting Vertical lines
   
   Look there are 1, 2 & 3 Vertical lines.
2. Now let's try to count Slanting lines
   
   There are 2 Slanting lines.
3. Let'scount Horizontal lines next.
   
   See, there are 4 Horizontal lines.
4. Now let's see how many Curved lines are there
   There is only 1 Curved line.

Great job! In the picture, there are:

• 3 vertical lines
• 2 slanting lines
• 4 horizontal lines
• 1 curved line

You did an amazing job counting and exploring the lines in the image!