Since Jan 2014, a small group of Singapore teachers have been designing self-directed learning (SDL) online learning resources using GeoGebra.[br][br]The design of a SDL the GeoGebra page is based on the following considerations:[br][br](a) Separating static and dynamic objects     -  so we adopt a two-frame structure on every [br]      Geogebra “page”[br][br](b) Progression of learning is scaffolded and structured on a sequential manner using navigation [br]     buttons;[br][br](c) Answers and explanations are provided