A necessary consideration in the development or expansion of courses incorporating techniques such as geographic information systems (GIS) is the establishment of the infrastructure to support such instruction. Planning for the practical application of knowledge involves the determination of hardware, software, data and personnel needs.
Continuity: the tendency to perceive things as simply as possible with a continuous pattern rather than with a complex, broken-up pattern o Contiguity: the tendency to perceive 2 things that happen close together in time as being related Rods and cones, which one is less or more light/color sensitive?
The path is a lot like the continuity view of development. Proponents of the continuity view say that development is a continuous process that is gradual and cumulative. For example, a child learns to crawl, and then to stand and then to walk. They are gradually learning how to walk. It's just like hiking up the mountain path: a slow, steady ascent that leads to the top.