Using these websites, you can practice your ear training skills. There are links for intervals, chords, and short melodic segments.
First, you should go to this website to practice intervals. Intervals
Begin with the first option (simple intervals up). After mastering this, move to simple intervals down. As you become more advanced, continue down the line of interval options. They will become more difficult as you move down the list, so be sure you are confident with a level before moving on.
Next, you can move to chord practice. Chords
For this begin with the first chord option. After mastering the this, continue through the other options. They will again get more difficult as you move down the list.
Dictation is the final part of the project. This is an advanced skill, but this site helps you move through the process with ease. Dictation
Practice these exercises to help you improve dictating melodies.