Subtraction Unplugged blends catchy melodies, drill and student involvement to make basic subtraction facts with minuends to 18 very memorable. The songs have been carefully written to reinforce subtraction skills through introduction to the concepts. The lyrics book may be reproduced by the classroom teacher for classroom use. Over a dozen worksheets are included in the lyrics/activity book. This is the digital version of the activity/lyrics book. No music is included with this item.