This teacher's guide features step-by-step instructions for activities that use easily-obtained and inexpensive materials as well as background information, literature connections, and assessment ideas. The activities are designed for children in preschool through first grade. Lesson descriptions include suggestions for modifying the activities to make them appropriate for students at any level. Most of the activities can be done in small groups or learning centers. Topics include behavior of live ants, ant body structure and tunneling behavior, ant food, and the life cycle of ants. Activities are designed to foster the following skills: observing, comparing, communicating, role playing, cooperative work, counting, problem solving, spatial reasoning, computation, and gathering data. A large Ant Nest poster, included with the guide, can be assembled in stages to emphasize tunnels, ant food, social life, and the ant life cycle. (JRH)