Square and cube number sequences

Recognising 1, 4, 9, 16 and 1, 8, 27, 64.

Triangular numbers

The sequence 1, 3, 6, 10 built by adding one more each time.

Fibonacci-type sequences

Each term as the sum of the two before it.

Geometric sequences

Sequences that multiply by a fixed ratio each step.

Naming the type of a sequence

Deciding from a few terms whether a sequence is linear, quadratic.

Geometric sequences with a surd ratio

Sequences whose ratio is a surd like √2.

Higher