The goal is to be able to read intervals drawn on the staff and play them. This objective see MusicGoals Terms drills reading and interval 1) the distance between two pitches 2) two notes combine to form an interval knowledge and improves sight-reading skill.
With the by Ear drills, you must read the first note, determine the second by ear, and then play both notes.
Use the “Help” button before beginning to see what intervals are included.
see also: Interval Naming, Intervals