This web based instructional material is part of HyperPhysics. HyperPhysics is an exploration environment for concepts in physics which employs concept maps and other linking strategies to facilitate smooth navigation. For the most part, it is laid out in small segments or “”cards””, true to its original development in HyperCard. The entire environment is interconnected with thousands of links, reminiscent of a neural network. The bottom bar of each card contains links to major concept maps for divisions of physics, plus a “”go back”” feature to allow you to retrace the path of an exploration. The side bar contains a link to the extensive Index, which itself is composed of active links. That sidebar also contains links to relevant concept maps. The rationale for such concept maps is to provide a visual survey of conceptually connected material, and it is hoped that they will provide some answers to the question “”where do I go from here?””. Whether you need further explanation of concepts which underly the current card content, or are seeking applications which go beyond it, the concept map may help you find the desired information. Part of the intent for this exploration environment is to provide many opportunities for numerical exploration in the form of active formuli and standard problems implemented in Javascript. An active exploration in physics will typically lead you to something which needs to be quantified, and it is hoped that the many Javascript-enabled calculations will provide many opportunities to answer “”What if ..”” type questions.