This book includes 20 science activities in the fields of scientific method, earth science, life science, and physical science. Each activity is composed of two parts--an explanatory section for the teacher and a student lab sheet. The explanatory section begins with a brief introduction designed to give an overview of the activity's main concept. Materials required, preparation of materials, focusing activity, procedures for lab, and extension activities are included. The scientific method experiences include: observation, inferences, sorting, graphing, and classifying. The earth science experiences include: creating fossils, water pollution, erosion, evaporation, condensation, and formation of sedimentary rock. Animal movement, animal and plant classification, animal camouflage, and sorting by shape are included in the life sciences activities. Circuits, forces of pressure, sound, and insulation are included in the physical science activities. Activities use inexpensive, easily available materials. (KR)