We focus on geometric sequences. A geometric sequence is a sequence where the ratio between any two consecutive terms is always the same. We usually use r to represent this common ratio.

So for a geometric sequence whose first term is a and whose common ratio is r, its nth term is:

an  = ar^(n-1)

Keep in mind that the complete sequence of a geometric sequence is determined by a particular term and the common ratio.

We did a bunch of exercises in the classroom.

Homework:

http://blog.newtonchineseschool.org/wangweidong/files/2014/09/HomeworkGeometricSequence.pdf