A Guide for Beginners - C Major Scale - Page 5
by Christopher Sung
Now, to make it even more interesting, we can play notes 1,3,5, then 2,4,6, then 3,5,7, and so on until we reach the top of the scale. Then we can play it back in a descending fashion. Incidentally, these little 3-note figures are called arpeggios, but you don't necessarily need to know about them right now...