Work that brain #3

Do you know how to solve sequences?
 
 
Sequences are patterns
in math, they are patterns of numbers
 
can you figure out the next number?
2,4,6.......
 
Did you guess 8? 
 
Why??
 
Yes there was 2 added each time.
 
What about 4,8,12,16,........
Whats next?
 
 
4 is being added each time, so did you get 20?
 
Try out this game:
 
http://www.funbrain.com/cgi-bin/cracker.cgi?A1=s&A2=0&submit=Start+Game
 
 
 
Now, look up Fibonacci sequence and tell me a little about it!