1 of 6

Algebra�Patterns

2 of 6

Algebra: Describing a Pattern

Learning Intention:

  • We are learning how to describe number patterns using letters and the nth term.

​

3 of 6

Algebra: Describing a Pattern

Patterns on screen:

  • 2, 4, 6, 8 …�
  • 3, 6, 9, 12 …�
  • 5, 10, 15, 20 …

​

4 of 6

Algebra: Describing a Pattern

Worked Example 1

Sequence: 3, 6, 9, 12 …

​

nth term = 3n

5 of 6

Algebra: Describing a Pattern

​

Worked Example 2

Sequence: 1, 3, 5, 7 …

​

nth term = 2n – 1

6 of 6

Algebra: Describing a Pattern

​

N represents the term.

T represents the actual term im the sequence

t for the formula we use the number that we need to subtract.