The study aimed to examine the effect of EMI model on English learning and professional knowledge for elementary school students. The study adopted quasi-experimental pre-and post-test design. Research subjects were 26 elementary school students who participated in 8-day engineering maker winter camp. EMI model was used in the experimental group. The control group only received non-EMI model. The learning unit of engineering maker was MicroBit robot. During learning process, students needed to program their robots. The research results indicated that EMI model might significantly improve students' English proficiency, programming ability, and electrical engineering concepts.