Many early childhood educators are beginning to experiment with and use portfolio assessment. Teachers are also observing young children at play and documenting their play activities for assessment purposes. Close observation of sociodramatic play gives teachers accurate perspectives on young children across the developmental domains of communication and cognition, and the aesthetic, physical, social, and emotional domains. However, insights gained through observation can be lost without some form of documentation. Teacher observations can be documented by means of checklists, rating scales, anecdotal records, photographs, and audio or videotaping. In addition to student work samples of writing, artwork, and individual or group projects, portfolio assessments should include documentation of children's sociodramatic play. (MM)