EXPLORING A ROCKY ISLAND Summit Film Productions, 1982. Distributed by Summit Film Productions, R.R. #22, Cambridge, ON, N3C2V4. Summit Film Productions, 1982. Sound film-strip. 1-71 frames, colour. $30.00. Includes 1 audiocassette, teacher's guide. Grades 4 and up. Reviewed by the Evaluation Committee of the Board of Education for the City of North York. Volume 11 Number 5 1983 September As in other presentations from this producer, two narrators take turns presenting major segments of the filmstrip. Their voices are clear, concise, and the comments are appropriate to the slide. This presentation demonstrates how one of the Thirty Thousand Islands of Georgian Bay, Lake Huron area, has evolved from molten rock to a tree-covered island. The continuity is accurate as presently accepted by most ecologists. The guide contains a list of difficult words, which would have to be pre-taught to make the visual experience effective. Recommended. From the Evaluation Committee of the Board of Education for the City of North York.