Patterns Class 1 Notes Maths Chapter 10

What is a Sequence?

• A sequence is like a special order or arrangement of things. It's when stuff comes one after the other, like the numbers 1, 2, 3, or the steps in a dance – always following a particular order! 

• For example, the letters in the alphabet are in a sequence from A to Z.

Let's look at another example: 

• Have you ever counted numbers before?
• Counting is a sequence of numbers that go in order. 
• It starts with the number one and goes up to higher numbers like two, three, four, and so on.

What is Pattern?

A pattern in a sequence is like a cool design that repeats. 

Imagine your favorite stickers - if they go smiley face, star, heart, and repeat, that's a pattern! In a sequence, it's when things follow a rule and keep happening in a similar way. ✨

Extending the Sequence

Extending a sequence or pattern means continuing the same order or design. Imagine you have a series of shapes or colors, like a heart, star, and rainbow. 

When you extend the sequence, you add more of these shapes or colors in the same repeating order. It's like completing the pattern by keeping it going!

Example 1:  Let's take a look at this pattern I have on the board. Do you see the arrows? The first box has an arrow pointing up, like this ↑. In the second box, the arrow is pointing towards the right, like this →. And then in the third box, it's again pointing upwards.

The direction of the arrow keeps changing! Up, then right, then again up. But can you guess what comes next? Let's think about it together.

We see that the arrow in the third box is pointing upwards. So if we follow the pattern, the next arrow should point towards the right again!

Ans: The next will be arrows pointing towards our right.

Let's play another little game to understand it better. 

Example 2: I will tell you a sequence of fruits - a mango, then an apple, and then another mango. Can you guess what comes next?

Ans: That's right, we will follow the same sequence and place another fruit after the second mango. But what fruit should we choose? Well, let's look at the sequence again - it goes mango, apple, mango. So after the second mango, we need to put an apple, just like before!

Now, let's keep going. After the apple, what should we put next? You got it - another mango! So the sequence goes like this - mango, apple, mango, apple, mango, and we can keep going and going.

Patterns in Shape

Let's take a look at the shapes in this sequence and see what we can find out!

In the first box, we see a rectangle. In the second box, we see a triangle. In the third box, we see a circle. 

What do you think will come next? 

Let's look at the pattern so far. It goes rectangle, triangle, circle. Do you see it? It's like a little dance of shapes, moving from one to the next!

Now, let's look at the fourth box. What shape is there? A rectangle! 

So what shape do you think will come next? That's right, a triangle!

And what about the sixth box? There's a circle there. 

So what comes next? You got it - a rectangle! Give