Due to the time constraints of intensive online courses, instructional design strategies should be modified in order to retain the quality of learning without reducing the quantity of the course content. This paper presents how a blended approach combining objectivist and constructivist instructional strategies was used in the design of an intensive summer online course in the context of a support-based online learning environment. The implementation results revealed that students had a positive learning experience in the course and were highly satisfied with their learning outcomes.