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?
tendency is an inclination toward a certain line of action (whether or not the action follows), and is often the result of inherent qualities, nature, or habit:a tendency to procrastinate.Direction is the line along which an object or course of action moves, often toward some set point or intended goal:The change is in the direction of ...