This teacher's guide on earthworms includes four major sections: (1) introduction, (2) caring for earthworms in the classroom, (3) classroom activities, and (4) the appendix. The introduction includes information concerning grade level, scheduling, materials, obtaining earthworms, field study, classroom clean-up, and records. Caring for earthworms and instructions for preparing a worm box are found in the second section. The classroom activities section includes such activities as introducing earthworms, outdoor-indoor activities, experiments, worms in the rain, worm food investigations, worm races, winter worms, underground activities, and other animals children may find. The appendix includes possible earthworm suppliers. (DS)