This is a set of reference materials and DVDs specifically for exercise instruction in early childhood. The set includes: DVD Volume 1 (March 2015) + Volume 2 Guidebook & DVD (March 2016) - a total of 3 items. - Title: Instructional Reference Materials on Exercise in Early Childhood - Contents: Reference materials on exercise instruction Please note that these are used items, so there may be some minor stains or imperfections. Thank you for looking.