Patterns


GLOSSARY

  • Pattern – A repeated or recurring sequence of numbers, shapes, colors, or designs that follow a specific rule or structure.

  • Visual Pattern – A series of shapes, objects, or images arranged in a repeated and predictable way, often found in art and nature.

  • Number Sequence – An ordered list of numbers that follow a specific rule. Each number in the list is called a term.

  • Fibonacci Sequence – A sequence of numbers where each term is the sum of the two preceding terms, starting with 0 and 1 (or 1 and 1 in some versions).

  • Pattern Rule – The method or operation used to move from one term to the next in a pattern. It can be expressed in words, a formula, or an equation.


PATTERNS IN ART AND NATURE

  • Michelangelo's The Creation of Adam follows the Golden Ratio (approximately 1.618:1).

  • Repeated circular umbrellas with different colors and designs form a visual pattern.

  • Vincent van Gogh's The Starry Night shows rhythmic patterns through repeated lines, shapes, textures, and motions.

  • Plant spirals often form 34 clockwise and 55 counterclockwise, both Fibonacci numbers. This creates a mathematically efficient pattern called phyllotaxis, maximizing space.


PATTERNS IN SHAPES

  • Example 1: Each part of the design is obtained by rotating the previous design by 90° clockwise.
    → Missing part is option (b).

  • Example 2: Each square contains a triangle inscribed in a circle. The triangle in the next circle is a vertical image of the previous one.
    → Missing part is option (a).


PATTERNS IN NUMBERS

Addition Pattern
Sequence: 2, 3, 5, 8, 12, 17, 23, ___
Rule: Each term adds +1, +2, +3, +4, +5, +6, …
Next term = 30

Multiplication Pattern
Sequence: 2, 4, 8, 16, 32, ___
Rule: Each term ×2
Next term = 64

Subtraction Pattern
Sequence: 100, 90, 81, 73, 66, ___
Rule: Subtract 10, then 9, then 8, then 7, then 6
Next term = 60

Division Pattern
Sequence: 256, 128, 64, 32, 16, ___
Rule: Each term ÷2
Next term = 8


FIBONACCI SEQUENCE

Standard Sequence
0, 1, 1, 2, 3, 5, 8, 13, 21, 34, …

Rule
Fₙ = Fₙ₋₁ + Fₙ₋₂
(Fibonacci number = previous number + the one before it)

Rabbit Problem Example

  • A pair of rabbits matures in one month.

  • Each mature pair produces another pair each month.

  • No rabbits die.

  • After 1 year, the number of rabbit pairs follows the Fibonacci sequence.