Earobics Home Version Step 2: Sound Foundations for Reading and Spelling This builds phonological awareness and auditory processing skills. Earobics Step 2 features five interactive games with 593 levels. The software automatically adjusts to the appropriate skill level of the user. Earobics uses adaptive training and acoustically modified speech. Recommended for ages 7 to 11;Operating System Supported:MacOS9/Win 00/XP