""Sandy Petersen"" Sandy Petersen is writer/ program analyst with the Early Head Start National Resource Center at Zero to Three. Ms. Petersen also coordinates Zero to Three's task force on Early Learning Guidelines for Infants and Toddlers. She is also part of the WestEd Program for Infant Toddler Caregivers, by developing and teaching the module on special needs. Before joining Zero to Three, she was Coordinator of Training and Technical Assistance for Early Childhood Initiatives at the Colorado Department of Education and continues to work on Colorado's "Expanding Quality in Infant and Todd...