PROBLEMS CONFRONTING TEACHERS IN TEACHING COMPUTER SCIENCE IN SECONDARY SCHOOL
BACKGROUND OF THE STUDY
How fast the world has grown, from the days of the primitive man, to the days of the medieval man and down to the day of the modern man. The world at large seen by the myopic man as two ends two far to be reached, has so soon been conquered by great minds. Minds that saw the possibility of turning this vast globe too large to be explored into a global village, where the distance between two ends could be reached in split seconds. Much could be said about such great minds as Socrates, Plato, Aristotle, men who through sound reasoning, birth fourth great ideas, that has so much impacted the world. But I believe that much more could be said about a set of men born in a particular generation, without whose contribution, the world would have remained a vast globe, whose two ends could never be reached in split seconds. Men whom through their great inventions conquered the barrier of time and distance, through whose inventions on e of the greatest gift to mankind was delivered, i would take a deep breath at this point to mention “The computer”. Thanks to Charles Barbbage, John Nappier, Lady Ad Lovelace, and others for such great inventions. Without the computer, our world could not be complete, education with all it’s great prospects as a process of successfully training the young and instilling the moral values and otherwise into them could never be complete.
The first computers were people: that is electronic computers (and the earlier mechanical computers) were given the name because they performed what had been previously assigned to people. The Abacus the first mechanical computation device was an early aid for mathematical computations. The Abacus is often wrongly attributed to China. In fact, the oldest surviving Abacus was used in 300 B.C. by the Babylonians. The modern Abacus consists of ring that slide over rods, and is still in use today, principally in the Far East. Following the Abacus, in 1617, an eccentric Scots man named John Napier invented logarithms, where the logarithms were carried on way sticks which are now called Napier bones. Napier invention led directly to the slide rule, first built in England in 1632 and still in use in the 1960’s by the NASA engineers of the mercury, Germini, and Apollo program which landed man on the moon. In 1642, Blaise Pascal, at age 19, invented the Pascaline as an aid for his father who was a task collector. This machine was capable of carrying out only addition and subtraction, which was otherwise known as the adding machine. In 1843, Charles Babbage invented the analytical engine which was capable of performing many complex tasks. The IBM in 1935 was invented, followed in quick succession between 1939 – 1944, by the ENIAC (Electronic Numerical Integrator and calculator) developed by a team led by John W. Mauchly. Then in 1946, Mauchly developed an improved mode of ENIAC called EDVAC (Electronic Delay Value Accounting Calculator), with an additional function that stores program concept. Today we have computers that perform instruction faster and more reliably.
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