Each level has a student's book, teacher's book, and audiocassette.
Children listened to audiocassette-recorded sounds and were asked to either combine or segment sounds.
This play session was both videotaped and recorded on an audiocassette tape recorder placed near the child.
They were recorded on audiocassette and scored online.
Use of the audiocassettes is essential.
The same scripts, picture books, and songs on audiocassette were used.
Both books have also been released on audiocassette.
Following each is a set of exercises and activities, which work with an accompanying audiocassette.
