The only thing I can remember I learned these past few weeks is a ARITHMETIC SEQUENCES :D 

Sequence is just an order or pattern.  For Example: *&(*&(*&(   The consecutive sequence is *&( 

Arithmetic is basically just using  +, -, x , or /  (basic mathematics)

Arithmetic Sequence, is just an order or pattern using basic mathematics.

Otays...  When dealing with Arithmetic Sequences, you aren't going to have consecutive numbers, you are going to have different numbers with a consecutive *beat* flowing throughout the problem... So you have a set of numbers put into a particular order; lets say...... 2 5 8 11 ... otay.. this sequence can go on and on. BUT thats not the point.. Our obligation is to find out how to get the numbers by finding out what is making these numbers go up? so we look to see whats the amount of numbers in between (btw. in between should be ONE word)... 2 and 5  --- 3 numbers in between~~~5 and 8 --- 3 numbers in between~~~ 8 and 11 --- 3 numbers in between...so we found our arithmetic pattern.. YAHHH!