Gearing Up Responsible and Outstanding Teachers in Southeast Asia for the 21st Century or GURO21 is a menu of flexible learning courses that aim to address the teachers’ needs in relation to the technological advances and changing educational trends of the 21st century. At the end of Course 2, you are expected to integrate higher thinking skills into your life in order to adequately meet the challenges of the 21st century in a more systematic manner, and develop higher order thinking skills in your students.