Children in early childhood learn how to communicate without formal instruction. Through their interaction with adults and older children, infants learn how language works. Before the ages of 4 or 5, most children have acquired the skills in the five aspects of oral language: phonetic, semantic, syntactic, morphemic, and pragmatic. Research studies on literacy emergent showed that at least 60% of all the 3-year-old subjects and an average of 80% of ages four and five can read environmental print when it is embedded in context. Children become aware of print as a natural, functional aspect of their environment as they observe adults interacting with, discussing with prints both in reading and written to fulfill their needs or their communication intensions. They are exposed to print in their homes, grocery stores, and restaurants; and they soon realize that written language in a variety of forms conveys meanings. Whole language learning is founded on the research findings of literacy emergent. It emphasizes that children in early childhood learn all aspects of language, listening, speaking, reading, and writing, through interaction with the natural, functional environment without formal instruction. This paper attempts to examine children's language development, both in oral and written, and develop whole language curriculum for children in early childhood.