This collection of 10 activities is designed to give students a better grasp of concepts relating to groundwater, aquifers, and hydrology. Activities can be conducted as a demonstration (especially for younger students) or as a laboratory activity for students in higher grades. The guide contains an introduction for teachers and students, a materials list, 10 activities, and a glossary. The first activity, Pre-Lab Construction, sets up the materials for the following activities which all utilize soda bottles and simple materials like sand and food coloring. The remaining activities cover the topics of marking guides, the hydrologic cycle, porosity, permeability, parts of an aquifer, the recharge zone, the discharge zone, sedimentary rock and core sampling, solubility, pollution plumes, and chemical changes in groundwater. Activities can be conducted in sequence or individually and are reproducible for the teacher. (LZ)