The Ypsilanti Curriculum Demonstration Project's language training curriculum for three- and four-year old disadvantaged children, using the Bereiter Engelmann program, is provided. The purpose of the curriculum is to effect a behavior change in the child to enable him to achieve in the traditional education environment. Emphasis is given to the development of "educational language" as opposed to "social language." Monthly reports of teachers for the months of October 1969 through February 1970 comprise most of this description of the program activities. A summary for the year is provided. Each monthly report is structured as follows: Opening and Closing Periods; Semi-Structured Time; Subject Areas: (1) Language, (2) Arithmetic, and (3) Reading; Child Management; and Notes. In addition to the monthly reports, brief discussions are given concerning home visits, teacher training, examples of positive reinforcement, issues concerning children and teachers in the language training program, and a contribution by a teacher's aide. (Appendixes A and B, Sample Lessons and Reading Supplement, respectively, are copyrighted and not available for reproduction.) (DB)