Sequences Overview – including examples of square numbers (which are connected to gravity and falling objects) and cubic numbers.

Matchstick Sequences – matchsticks are often used to illustrate sequences because matches can be used to make patterns that build in easily predictable ways. Includes a problem that was set for homework.

Fibonnaci Sequence & the Golden Ratio – a sequence of numbers named after Leonardo of Pisa, who was known as Fibonacci. The Golden Ratio pops up in lots of situations.