Unit 3. Number sequences

Here you have the contents for this unit:

1. What is a sequence?
2. Arithmetic sequences and series.
3. Geometric sequences and series.
4. Practice with sequences.
5. VOCABULARY.
6. Curiosity: Gauss story.

To end this unit, have a look at this famous video, it is called "Nature by numbers", I hope you like it:

Take care,

ALICIA