The curriculum guide for a Spanish two-way partial immersion program in the Francis Scott Key Elementary School (Arlington, Virginia) is designed as a reference for parents and teachers. It presents information, instructional objectives, and activities in the form of integrated instructional units for grades K-4. Introductory sections outline: the goals and philosophy of the program; program guidelines for classroom management, learning processes, and cognitive and language development; suggestions to parents of participating students concerning their role and involvement; concepts and skills addressed throughout instruction in English and Spanish language arts and mathematics; and objectives of the use of learning centers. A series of curriculum units follows, each containing an overview, listings of concepts and objectives, a variety of class activities, suggestions for instructional materials, learning center activities, and vocabulary. Unit topics include: living things (plants); uses of senses; needs of people; communities; holidays; food chains and webs; and the solar system. Notes on testing, lists of useful expressions, Spanish songs and poems, and a grade 4-5 unit on rocks and minerals complete the guide. (MSE)