3rd Class Mental Ability Shapes and Patterns Patterns

Patterns

OBJECTIVE

• Students will identity patterns in pictures/shapes, numbers and letters.
• Students will develop an understanding extend given patterns.
• Students will be aware of the patterns in their daily surroundings.
• Students will be sort and group objects.
• Patterns serve as the foundation of algebraic thinking.

Introduction

A pattern is a repeated design or recurring sequence. It is a set of pictures/ shapes, letters or numbers arranged according to a certain rule.

Type-I

Find the missing term or next term in (number or letter) series to continue the given series.

·         Identify the order of series (descending or ascending order). Observe the pattern using operations: addition, subtraction, skip counting and reverse counting.

·         Identify the order of alphabetical series either A to Z or Z to A.

·         Numbering of alphabets series either A to Z or Z to A.

·         Skipping letters/numbers.

Type II

Find the missing term in the pattern.

·         Identify the missing term in the pattern by observing the rule followed in rest of the given terms.

Type III

Find the missing part in the figure pattern,                            

·         Complete the figure pattern by drawing its incomplete part in the pattern

Type I. Picture Based Pattern

Example - 1

How many smiling faces will be there in Pattern 5?

Pattern 1           Pattern 2                  Patterns 3

(a) 10                            (b) 12        

(c) 15                            (d) 16

Ans. (c)

Explanation:

Smiling faces in pattern 1=3                                        

Smiling faces in pattern 2=6

Smiling faces in pattern 3=9

So, the Pattern is as follows

Example - 2

Joshua is weaving a pattern into a rug. What would most likely come next?

(a)  

(b) 

(c)

(d)

Ans. (a)

Explanation:

Each pattern repeats itself at every fourth step.

Example - 3

Which of the following options will complete the figure (X)?

(a)             (b)

(c)             (d)

Ans (d)

Type II: Number Based Pattern

Example - 4

Complete the number pattern.

3, 6, 11, 18, 27, ___?___, 51, ____?____.

(a) 34, 60                      (b) 38, 66      

(c) 42, 71                       (d) 46, 75

Ans. (b)

Explanation:

Rule followed in the series is:

Difference between consecutive terms are consecutive odd numbers.

Type III: Alphabet Based Pattern:

Example - 5

(a) IP                            (b) PU       

(c) MT                           (d) NS

Ans. (c)

Explanation:

The Pattern is as follows:

I Series

II Series

So, MT will complete the alphabet pattern.