CHAPTER ONE
INTRODUCTION
1.1 BACKGROUND OF STUDY
The use of mathematics in the society cannot be over emphasized. Akinsode (2000) pointed that from the past, mathematics has maintained an enviable position in our everyday activities. It has been the backbone of several human endeavor notably science and technology. Little wonder that here in Nigeria it has remain the core subject from kindergarten to graduate school.However,mathematics education today appears to be in crises situation as it can be seen in the poor performances of students in private and public schools examinations and the general fall in standard. Just as students have difficulties in learning mathematics due to factors such as laziness, boring, the teacher equally have differences in achieving effective teaching in our school system due to the use of poor method of teaching and teaching aids.
Mathematics is defined by some non specialists as the abstract science which investigates deductively the conclusions implicit in the elementary conceptions of spatial and numerical relations, and which includes as its main divisions geometry, arithmetic, and algebra. (Oxford English dictionary, 1933).It is also defined as the study of the measurement, properties, and relationships of quantities and sets, using numbers and symbols. (American dictionary 2000).Mathematics is the science of structure, order, and relation that has evolved from elemental practices of counting, measuring, and describing the shapes of object (encyclopedia Britannica)
Some specialist also defined mathematics as the science of quantity. In Aristotle’s classification of the sciences, discrete quantities were studied by arithmetic, continuous quantities by geometry. Auguste Comte’s definition tried to explain the role of mathematics in coordinating phenomena in all other field. He also defines mathematics as the science of indirect” measurement.The “indirectness” in Comte’s definition refers to determining quantities that cannot be measured directly, such as the distance to planets or the size of atoms, by means of their relations to quantities that can be measured directly.(1955)
Mathematics as we are all aware is the fundamental tools used to explain other scientific and technical concepts. Mathematics has been the only language that the developed countries like U.S.A, U.K, Germany, Japan, used to advance their technology. They have also used their technology to conquer the land, sea and the space, thereby making life worthy of living for their people. The special theory of relativity by Albert Einstem in 1905 helped us to build our understanding of space and time. The Newton’s law was launching satellites. Mathematics and mechanics also play a great role to enable the pilot, navigator, flight engineer, understand their work easier (Aderogha, k. 1990).
Faleye (2002), opined that Russia, United states of America, Great Britain, Germany, France, china, Japan and a host of other developed nations will forever nurture the wanders that mathematics has brought to them and will still bring.
According to ivowi (2003), for national development to occur, there need to be available a crop of human resource with sufficient knowledge and skills to interact with ideas and materials In order to produce required results. The problem of such interaction must be solutions to identified problems and which contribute significantly to the improvement of the society. Mathematics education among others is so important in the development of individuals and the society.
According to Akesode (2000), it is obviously for good reason that the Nigerian education policy insists on a foundation of mathematics. The concept of literacy goes hand in gloves with numeracy-ability to use numbers. A person, who lacks numeracy skill, will be useless to himself and the country. A numeracy skill no doubt is the language in different aspects of our life and the nation.
For instance, the health care delivery system, both the doctor and the patient will be in problem without mathematics. To document a patient’s ailment, mathematical instrument is needed. To say that the temperature of the patient is high or the blood pressure is low, the doctor has to have precise measurement I degree Celsius for temperature and millimeters of mercury for blood pressure. From diagnosis of diabetes through paternity testing using DNA to test HIV status, the language is mathematics. From a minor surgery of suturing an ulcer to major to major brain surgery or organ transplant, mathematics has a place especially with regard to precision of measurement.
In the defense sector, the manufacturer of military hardware and equipment is heavily dependent on mathematical concepts and skills. Without sound geometric calculations and computations involving projectile notion, a missile aimed at point A will end up in point B. ask the pilot of a modern day jet fighter or bomber and he will tell you that without mathematics, he will be unable to communicate with his plane.
The list is unlimited for planning purposes, population of an area is needed for this, and you need mathematics. In the popular program “kick polio out of Africa” the number of children immunized against this polio is to be calculated and the number of those not inoculated then derived, this is no other but mathematics.
Since mathematics plays a key role in the nation’s development, the need to have competent teachers, right method of teaching and above all, relevant instructional media to build future professionals who would champion the development of our nation from various fronts cannot be overemphasized.
The way teachers view the role of media in classroom teaching will to a large extent determine the level and degree of its usage. Teachers form an impression which is favorable or otherwise, depending on specific traits teachers attribute to media. Teacher perception of media is predicted upon what they feel media can do in teaching-learning process. However, evidence abounds that what teachers said were their reasons for not using media were not true (Zepp, 2005:Scrimshaw, 2004; SugarCrawley & Fine, 2004; Cohen, 1996; Hubbord,1999).
Educational technologists often employ the term instructional media to represent all of the devices that teachers and learners use to support learning. However, for many educators the terms educational technology, instructional media, andinstructional technology are used interchangeably.There are a lot of definitions of media. Gagne (1970) defines that media are various components in learners’ environment which support the learner’s learn.Briggs (1970) defines media are physical means which are used to send messages to the students and stimulate them to learn. A little bit differences from the opinions of the two experts, The National Education Association defines that media are the forms of communication either printed or audiovisual. Scanlan states that instructional media encompasses all the materials and physical means an instructor and teacher might use to implement instruction and facilitate learners’ achievement of instructional objectives. This may include traditional materials such as chalkboards, handouts, charts, slides, overheads, real objects, flash card and videotape or film, as well as newer materials and methods such as computers, DVDs, CD-ROMs, the Internet, and interactive video conferencing.
According to Richard (1992), in general term, instructional media means television, radio and newspapers considered as a whole and as ways of entertaining of spreading news or information to a large number of people. Teaching materials which involves the use of different kinds of media such as visual and printed media are sometimes known as multimedia or mixed media. There are various kinds of media, but visual aids are the appropriate media for learners, particularly young learners. Whatever the definitions of media are, there is a guideline which can be stated about media. Media is anything used to send message(s) from the sender(s) to the receiver(s), so it can be aroused the learners’ thought, feeling, and interest to gear the students’ learn. (Sadiman et al, 2002).
Sometimes, instructional media and teaching aids are used interchangeably. Both, instructional media and teaching aids, have functions to make learners easily to understand the teaching. However, some experts still differentiate between instructional media and teaching aids. When we talk about a board, either whiteboard or blackboard, which is being used by a teacher to inform learners about what he/she, is teaching, at the same time we also talk about instructional media and teaching aids. The board is teaching aids and what is on the board is instructional media. Here, we can say that teaching aids are the objects and the content of the objects is the instructional media.
A good media is like a window. It should not be called attention to itself; itshould just have been let in the light. In general, teacher should use the instructional media in his or her best judgment. It can be facilitated learning or increasing the understanding of materials. Of course, communicating to facilitate learning can be a challenging process, and it is often required creative efforts to achieve a variety of implicit instructional goals (University of Saskatchewan,). Among the implicit goals that media can be helped by teachers to achieve are as follows: attracting attention, developing interest, adjusting the learning climate and promoting acceptance (of an idea).
Media is very useful in learning the mathematics. Teachers’ instructors and learners are helped by using media to achieve the learning goals. So, teachers should apply the instructional media in teaching – learning activities because:
1. Instructional media can be reached everything out of the class. There are so many things around the learners that cannot be reached by them, such as: bacteria, virus, etc. To know and see those tiny things, we must use a microscope as a media. We use a picture to present things which cannot be brought into the classroom such as: markets, stations, harbors.