Patterns
Category : 2nd Class
LEARNING OBJECTIVES
This lesson will help you to:—
QUICK CONCEPT REVIEW
A pattern shows the same thing again and again. It is an arrangement of objects; numbers or letters with some fixed rule.
Look at the patterns made with circles and tiles.
In the first pattern you can see one shaded and one unshaded circle getting repeated.
In the second pattern a square is divided diagonally and shaded half.
KINDS OF PATTERNS
1. Repeating Pattern
In repeating pattern same things appear again and again.
(a)
(b) A B A B A B A B
2. Increasing Pattern In increasing pattern things increase in size or number.
(a) X XX XXX XXXX
(b)
3. Decreasing Pattern In decreasing pattern things decrease in size or number.
(a)
(b) ABCD ABC AS A
NUMBER PATTERNS
Examples:
Increasing Pattern:
In increasing pattern numbers increase in a certain manner, for example.
In the above example numbers are increasing by two.
Historical Preview
Geometric patterns were the great source of decoration in Islamic art which include calligraphy and vegetal patterns.
Decreasing Pattern:
In decreasing pattern numbers decrease in a certain manner, for example.
In the above example numbers are decreasing by one.
Repeating Pattern:
In repeating pattern numbers are repeated in a certain manner, for example.
In the above example 1 and 2 are appearing one by one.
SHAPE PATTERNS
Examples:
Patterns given above are based on repetition of shapes.
Turning Shapes
A shape can be turned up, down, left, right again and again. We can see turning shape patterns in art and fabrics.
Examples:
TILES PATTERNS
The tiles which cover the floor of your house creates a pattern. The method of putting the tiles together without gaps is called tessellation.
Examples:
Amazing Facts
We can see beautiful patterns on the skin of various animals, like Tiger, Zebra, Leopard etc.
THUMB PATTERNS
Patterns which are made with the help of thumb and fingers are called thumb patterns.
Examples:
VEGETABLE AND FRUIT PATTERNS
Patterns which are created with the help of vegetables and fruits, are called vegetable and fruit patterns.
Examples:
Real Life Examples
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