This document discusses assessment of infants, toddlers, preschoolers, and primary grade students. It describes typical behaviors, characteristics of developmentally appropriate assessment tools, and effective engagement techniques for each age group. For infants and toddlers, it outlines physical, motor, social, and exploratory development. Appropriate assessment tools observe, document, and analyze progress. Engagement techniques include activities, exploration, and play. For preschoolers, it discusses curiosity, independence, social skills, and tantrums. Appropriate tools include natural observations, portfolios, and questionnaires. Engagement supports active play, representation, and planning. For primary grades, it notes security, play, exploration, independence, and socioemotional growth. Appropri