Used in the ALC kiddy CAT English classroom. This is six years' worth of teaching materials, for elementary school students from 1st to 6th grade. CDs and DVDs ◯ Operation confirmed. Only STEP 1 has a name written on the CD/DVD and case, otherwise there are no markings. For those who will be attending the classroom from now on, or for independent English study at home, how about establishing a daily English habit for your children? (^o^)