This monograph is a rich resource of information designed to strengthen science and basic skills teaching, and improve learning for limited English proficient (LEP) minority student populations. It proposes the use of hands-on science investigations as the driving force for mathematics and English language development. The materials included in this book are based upon the understanding that science and the English language can be effectively learned together, and that teachers of LEP students need not place excessive emphasis upon the first language; although the availability of teachers and aides who have knowledge of LEP students' first language can enhance instruction through its judicious use. Chapters include: (1) "Science and Language Instructional Goals for Limited English Proficient (LEP) Minorities"; (2) "Grades N-6; Science and Language Instruction for LEP Students: The Integrated Activity Learning Sequence (IALS)"; (3) "The Nature of Science Driven Instruction for LEP Students"; and (4) "Supporting Reform in Science Driven Instruction for Diverse Student Populations". Two appendices include resources for science teachers, educators, policymakers and others for improving science instruction for LEP students and an integrated activity learning sequence in science for grades 9-12. Contains 54 references. (JRH)