Science Education on Electricity

It is well known that the science is one of the difficult subjects for many students. An examination was carried out, how well the colledge students understood the science, in particular, electricity (concerning the brightness of a small bulb) taught in both primary and junior high schools. As a result, it is found that they lack in understanding of the relation between various electrical phenomena although they understand well the separate phenomena such as Ohm's low, Joule heat etc. The term electricity is used in various meaning so that it is important to understand the concept of electricity, although it is difficult to learn because of its unvisible nature