This lesson plan for the second grade uses information on the solar system to provide science education for limited-English-proficient (LEP) students in San Diego, California. The lesson has been developed to be taught in a bilingual class, a Spanish-language immersion class, or a two-way bilingual class. Lessons are arranged so that native English speakers can assist the non-native speakers. The lesson unit is for one week, 25-30 minutes per day. Language levels include pre- and early production, speech emergence, and intermediate fluency. Instructional components are second language development, primary language instruction, specially designed academic instruction in second language, cross-cultural/self-esteem building, and parent/community involvement. Instructional objectives, unit goals, homework, and assessment are described. Included is a vocabulary development talking chart in English and Spanish. (NAV)