The purpose of this manual, which accompanies a video program, is to provide general background information for foreign language teachers who are, or soon will be, teaching in total, partial, or two-way immersion classrooms. Part of a series of video programs, this manual highlights techniques, strategies, and special considerations that immersion teachers must think about as they plan for and teach mathematics and science to immersion students at the elementary school level. The manual and the video program have been designed to complement each other in a variety of ways. The video program has been divided into two sections and it is recommended that each section be viewed separately. The first section explores three principles for teaching math and science in the immersion classroom: actively involve students; integrate the teaching of language, math, and science; and adapt language and content instruction to students' background and life experiences. The second section presents three scenarios during which the viewer may identify the three principles from Part 1 in real classroom situations. Appended materials include math and science objectives, an immersion planning checklist, a checklist for evaluating an immersion lesson, and a discussion of caregiver speech. A background paper by Gilbert J. Cuevas is included. (Contains 22 references.) (VWL)