Child advocacy and pediatric groups are criticizing a non-profit group for teaming with Sesame Street on videos aimed at children as young as 6 months.

DVDs of Sesame Beginnings are scheduled to be released April 4 for very young children and their parents.

Sesame Street, which has released educational materials for more than three decades, is taking its first step towards children under 3, The Boston Globe reports.

The non-profit group Zero to Three is getting the bulk of criticism, since it has a mission of supporting healthy development and well-being for families, infants and toddlers.

It has not put out commercial work before now, and Psychologist Susan Linn, co-founder of the Campaign for a Commercial-Free Childhood, said Zero to Three sold out.

Dr. Donald Shifrin, spokesman for the American Academy of Pediatrics, said the move may encourage parents to let young children watch TV, a trend his group wants to reverse.

Zero to Three executive director Matthew Melmed said the organization is trying to provide a batter option for parents who already use TV as a babysitter.