The curriculum is developmentally appropriate, encouraging children to be actively involved in the learning process. The classroom offers many opportunities for children to manipulate a wide variety of materials; to play alone and with others in sensory, constructive, and symbolic activities; to ask questions and develop concepts about themselves and their world; to be physically active, and to express themselves in words, art, and music. As children develop greater understanding and improve skill levels throughout the year, the teacher will observe, and when appropriate, increase the complexity and challenge of these activities.