PROCEDURES FOR IMPROVISING LABORATORY EQUIPMENT FOR AN ACTIVE ELEMENTARY SCIENCE PROGRAM AND SOME SUGGESTED APPLICATIONS ARE PRESENTED. NEW COURSES OFTEN REQUIRE APPARATUS KITS AS WELL AS TEACHER'S GUIDES IN ORDER FOR THE PROGRAM TO BE CARRIED OUT AS DESIGNED. AS SCIENCE PROGRAMS EXPAND, MORE VERSATILITY, FLEXIBILITY, AND BROADER APPLICATION ARE REQUIRED. PREPARED KITS ARE INADEQUATE FOR GENERAL APPLICATIONS AND OFTEN REQUIRE MULTIPLES OF A CERTAIN PIECE OF EQUIPMENT. THOUGH A CENTRAL SET OF SCIENCE EQUIPMENT MAY BE PRACTICAL IN SOME CASES, IT IS SUGGESTED THAT EACH CLASSROOM HAVE ITS OWN STORE OF EQUIPMENT AVAILABLE AT THE MOMENT OF SUGGESTION OF SOME NEW AND EXCITING IDEAS. STUDENTS CAN OFTEN IMPROVISE WHEN COMPLETING AN ACTIVITY, THUS ADDING VALUE TO THE EXPERIENCE. MATERIALS FOUND USEFUL FOR A CLASSROOM ARE LISTED, BUT THE LIST SHOULD BE CONSIDERED ONLY A ROUGH GUIDE. COSTS ARE INDICATED FOR MANY ITEMS. PHOTOGRAPHS AND NARRATIVE SUPPLEMENT THE LIST AND SUGGEST INNOVATIVE APPLICATIONS. (DH)