This paper was a summary of a final report of a large-scale research project "Multiethnic Curriculum Development for Elementary Schools", which aimed at developing effective curriculum models and design curricular for aboriginal students. This research utilized the following methods to gather data: literature review, content analysis, focus group, and interview. First of all, this research reviewed the current elementary textbooks from multicultural perspectives. Then, the researchers conducted focus group discussions and interviews to understand aboriginal culture and education experiences. Finally, each research team designed a set of learning package (including textbooks, teachers' handbook, and students' exercise) for each subject. In the selection of curiculum develop approach, this project adopted different approach for different subjects according to subject nature. For example, Chinese and Social Studies integrated additive and transformation approach. Sciences and Mathematics applied additive approach. Physical education, Music, and Art and Technology adopted transformation approach. During the process of curriculum divelopment, the researchers confronted and reflected on many crucial issues. The most important issue was the subjectivity of aboriginal culture in multiethnic curriculum. After rethinking this issue from the perspective of multiculturalism, this project procided three strategies for curriculum design, F model (For them), B model (By them), and M mode (Mixed). In addition, this paper dealt with the issues raised from the shift of curriculum model from complimetary education to multicultural eduction.