IMPLEMENTATION OF VISUAL PRINCIPLE USING PHYSICS DEMO TASKS

This paper deals with the significance of visual principle in education process and its implementation (realization) using physics demo tasks. Visual principle is a guiding principle of educational activities in selecting the contents and the methods of teaching. Physics is an experimental science. Students can successfully master the basics of Physics provided the source of knowledge is a physical experiment based on the visual didactical principle. To optimize the teaching process it is necessary to visualize phenomena, processes or objects. Visualization is significant for problem solving in research and teaching. Physics demonstrations inure to this aim very well. Demo tasks which exemplify the ideal gas laws are presented and analysed. An ideal gas is characterized by three state variables: absolute pressure (p), volume (V), and absolute temperature (T). The relationships between them are showed by demo tasks. Demo tasks for iso-thermal, isobaric, isochoric and adiabatic process are discussed. The place of the demo tasks and the pos-sibilities of applying them during physics teaching are analysed. Reasoning sequences for giving a logical sense to these physics demo tasks are introduced. These sequences have been based on the system of spe-cially thinking schemes and prepared as a guide determining the steady movement toward a positive result. The demo task and its reasoning sequence enable the pupils to understand essence of new subject, to colligate, to make conclusions. Reasoning sequences, prepared for demo tasks are efficient in training pupils' way of thinking.