It is not always easy to get a naturalist to visit schools and it is often difficult to transport school groups to a state park. Hence, the Ohio Department of Natural Resources (ODNR) Division of Parks and Recreation developed Portapark to provide teachers with educational activities, techniques, and ideas. These activities are aimed specifically at the elementary grade levels, but are adaptable to other age groups and situations. They are designed to be interactive, hands-on, multisensory, and interdisciplinary and each activity is designed to meet a stated educational objective. Activities cover such themes as protective coloration, alternative uses for items, trash, environmental stewardship, nature's interdependencies, and adaptations. The packet begins with presentation ideas to help teachers understand important points for teaching in a natural setting. An activities overview section describes the format and offers tips for personalizing the activities. The activities section contains 13 activities, each of which includes a stated purpose, a materials list, activity ideas, and discussion questions. Activity extenders offer ideas to add to an activity when the activity hasn't filled the available time or when students could use a quick exercise to reinforce a previous lesson. These include games and trivia cards. The final section describes ideas for class projects, some of which can be extended for several weeks or throughout the year. (PVD)