Intervals

Intervals are the space/distance between two notes.  Go through the following presentation to learn more about them.
Practice creating interval here (you can also change it to identifying intervals as well in the settings).

Ear Training

Another important aspect about intervals is to be able to recognize them by ear.  When determining/memorizing the intervals, it might be helpful to think of them in relationship to a song you are familiar with.  For example, the first interval jump in "Twinkle Twinkle Little Star" is a Perfect 5th.

Check out this link for more song suggestions and practice.

You can also use this site to practice your ear training.

Interval Inversions >>>