The problem of this study was to describe, analyze, and compare the effects of learning centers and curricular themes upon the writing production of four children within a kindergarten classroom which followed the whole language approach. This study was conducted in a public school. Four subjects were identified from the administration of the Book Handling Knowledge Task. Using the qualitative research method of case studies, the teacher-researcher kept observational notes concerning the writing behavior of the subjects. The written compositions of the subjects were collected daily throughout the school year and were assigned a context, learning center and curricular theme. The compositions were then coded as to writing frequency, function, and form. The following findings resulted from the study: writing occurred most frequently in the art center followed by dramatic play, language, sand, science, social studies, "other," eyes and hands, mathematics, and library-listening; writing occurred most frequently during the curricular theme of Christmas followed by self-concept, shapes and colors, farm animals, Thanksgiving, Winter, transportation, nursery rhymes, patriotic, Valentine, food and nutrition, Halloween, Spring, wild animals, community helpers, gingerbread man, Summer, Easter, and pets; all five functions of language were used in the art center, four in the language, dramatic play, …