The teaching of thinking skills has been emphasized in many ways in the Malaysian education system. Although efforts have been done to assist the teachers to teach HOTS, the impact to change students learning is minimal. One of the major reasons identified is the availability of resources based on Malaysian context. A study was conducted on the development of OER to host Bahasa Malaysia, English and History resources designed for Malaysian classrooms. The development of OER aimed to provide these resources to teachers. The study involved six teachers and 92 students of a suburban school in Malaysia. Observations, questionnaires and interviews were used to gauge the teachers’ use and expectations of the OER. The findings presented in this paper focus on the OER as well as the HOTS elements in the OER. Findings suggest that although teachers show positive attitude in using OER, they need to be trained to use OER in a way that suits their respective students. (Abstract by authors)