This Audio Memory Subtraction CD is sold-separately as a replacement for those who already own the Audio Memory Subtraction Book & CD Kit or Auido Memory Subtraction Book.
Subtraction Songs teaches kids how to solve all subtraction facts from 1-1 to 20-12. Each song is repeated with a pause when students may answer before hearing the solution; a sing-along test is given after each song. 24 Tracks on CD including tests. Grades Pre-K & up. Workbook not included. CD comes in paper sleeve.