The videos work by encouraging repetition and practice, which are crucial to learning, and essential to the physical development of a child’s brain. An award-winning series created by speech pathologists that entertains babies, toddlers, and beginning talkers. Video 1 - 3 - 30 months is perfect for beginning babblers through late talkers. Video 2 - 6 - 36 months focuses on first words, sounds and facial expressions. Video 3 - 9 - 40 months, over 150 words and pharses containing the next developing sounds T, D, & N. All DVDs are in great condition. In original cases. No breakage and scratches.