CDIO (Conceive, Design, Implement, Operate) is a methodology currently applied by many universities worldwide and some Vietnamese universities in order to meet the increasing demand of human resources in the 21st century. To innovate curriculum and teaching methods according to CDIO approach, materials need to be built and supplemented appropriately. This study is an experiment to build a website as a supporting material for teaching Electricity Section in General Physics subject. The website is built on the basis of the CDIO approach, especially the standards 7 and 8 and the flipped classroom model. This article describes the website’s designing process and structure, and the test results after implementing the website at Ho Chi Minh City University of Food Industry and Tran Dai Nghia University. Surveys of teachers’ feedback and learners’ evaluation have indicated the effectiveness of webstie as a learning material. This conclusion suggests further studies should be taken on building suitable materials for CDIO-approached subjects.