In response to the national policy of developing Taiwan as a bilingual nation in 2030 and implementing competency education (12-year basic education), how to enhance students’ English proficiency and learning effectiveness has become a very important educational issue. Alongside the demand to shape a sustainable future, this research forms an integrated curriculum design related to sustainability and a circular economy. This curriculum is combined with bilingual digital media, CLIL teaching methods and one of the focused conversation skills – ORID. To evaluate integrated curriculum design, this research will proceed with a teaching illustration and collect students’ responses to self-efficacy and learning feedback. Before proceeding with the illustration, researchers will discuss and revise teaching plans together with civic and society teachers from middle schools. While proceeding with the teaching illustration, an illustrator will appropriate CLIL teaching and learning models, combining these with Mandarin and English teaching materials, including digital media to boost learners’ comprehension. At the end of this teaching illustration, the illustrator will use an ORID method to encourage students to discuss and form their own opinions in English. After the teaching illustration, researchers will exam all feedback and data collected from the students. In doing so, this research intends to examine how CLIL bilingual teaching materials, digital media and ORID methods can improve learners’ learning effectiveness and confidence Through a paired sample T-test, using CLIL bilingual teaching materials and a group discussion method can improve students’ self-efficiency in an elective course (pre mean=24.03, post mean=25.75, p<0.05), and bilingual lessons’ learning effectiveness (pre mean=13.31, post mean=15.1, p<0.001). After the class, students finish their posters, designed by an ORID method, and conduct peer assessment. By doing so, student can appreciate other teams’ posters, recognizing that bilingual lessons are achievable and feeling confident about them. Thus, using a group discussion method in teaching can be a useful strategy for bilingual learning.