The goal is to recognize the interval 1) the distance between two pitches 2) two notes combine to form an interval numbers quickly. Learn to see lines and spaces between notes and know the interval before you can count it.
Seeing the distance between notes reveals how far to move the hand and in which direction. It is also an important part of being able to read and write intervals correctly.
Within the first octave an interval with the same note names but twelve half steps higher or lower, odd numbered intervals, 3rds, 5ths, and 7ths, go from a line to a line or from a space to a space. Even numbered intervals, 2nds, 4ths, 6ths, and octaves, have one note on a line and one in a space between lines.
Try out the interval buttons before beginning to learn the intervals. Click on the screen staff to place the lower note of the interval. If the lower note is placed too high, the interval cannot may not fit on the screen.
To stop the sound, click on the on-screen staff.
see also: Interval Naming