Robinator is a series of games that will dictate random sounds to you. You don't need to know how to place the notes in the staff. Just listen to the different pitches, decide their order and Robinator will write the notes for you.

The second level of these games doesn't include a practice section; they go right into the dictation.

Acción Piano Aula de Música we use the green dictation games with children smaller than 6 years old.