Logan Greenbaum and Marissa Joliff, both students at Mercer County Head Start, sing and dance in the parking lot of the Galleria in Celina on Thursday morning in observance of National Week of the Young Child. Also as part of the celebration, students, teachers and community leaders joined hands to symbolize the importance of early childhood education. The Week of the Young Child is an annual celebration sponsored by the National Association for the Education of Young Children (NAEYC).