INTRODUCTION
The use of sensory aids in teaching of mathematics is one of recent origin. In
fact all teaching has always involved the communication of ideas through the
senses either orally through the medium of speech, or visually by the use of written or printed material.
Text books, writing materials, black boards and geometrical instruments have
long been regarded as indispensable equipments for teaching mathematics
classes. Our high school classes now contain a chapter on computer. Every
student must be given training in handling it. Operating upon it with
reasonable degree of accuracy should become an activity for every student.
Every high school and higher secondary school should immediately set up its own
computer training department. The school student of today must equip himself
with its use before he goes out into the field.
OBJECTIVES
To understand about the
software like Dr.Geo, Geogebra etc, which helpful to draw mathematical shapes.
To know about interior angles,
and how to measure it.
To measure the length of a line.
To find out the area of geometrical shapes and
its formulas.
To study about circle.
To analyze or synthesis the data collected
COMPUTERS IN EDUCATION
We are living in an age of information overloaded with the expectation
that students will learn high level skills such as how to access, evaluate,
analyze and synthesis vast quantities of information. Today computer is widely
used in business and research. The increasing important of informatics in day
to day life has resulted in the emergence of computers and it use in education
at the national and international level. Its application is enormous. It is a
powerful machine equipped with keyboards, electronic circuits, storage
compartments and recording devices for the high speed performance of
mathematical operations. In simple terms a computer is a glorified calculator
with difference. It has in addition capacity for storing or memorizing a large
amount of information and producing or retrieving any of them when called for.
The computer is a box loaded with information. Information and problems are
translated into computer language so that it can understand. In the recent
years computers is widely used and is bringing some exciting innovations in
educations. Computers allocate learning resources to students as a group. It
take over the most of the drudgery of schooling like classifying students
according to abilities, preparing time table, schedules etc. The use of
computers in education keeps a balance between knowledge, entertainment and
creativity according to the nature of the learner.
INFORMATION TECHNOLOGY IN TEACHING
MATHEMATICS
Mathematics is essentially a subject
where doing is more prominent than reading. It is why a certain amount of
equipment is indispensable in order to make even a start in their subject. More
over it is felt by a vast majority of people that mathematics is dry and
difficult subject, full of abstract things. The result is that student’s take
very little interest in it. To create necessary interest is a constant problem
for mathematics teacher.
There are software applications that
provide the tools for drawing geometric shapes. Suppose we drawn a rectangle
and now want to change the lengths of sides. If the rectangle drawn in paper
the only way is to draw a new rectangle. That is not necessary when we draw on
a computer. This is the main advantage of doing geometric drawings in computer. Geogebra is an educational software application
used for drawing geometric figures. Geogebra helps to construct parallel lines,
to identify the properties of lines, to construct angles, to determine the
midpoint of a line, to construct polygons, to construct circles, to construct
circle containing a triangle etc.
Construction
Of Parallel Lines
Suppose we want to draw two parallel
lines. Once you draw the first line, you can draw any number of line parallel to
it. You have to decide on where do you want to draw it. Use the tool in group
III of the yool box to draw
parallel lines.
Properties
Of Line
Mathematically a line has just one
property- length. In order to measure the length of a line, use the tool in
group VII.
Midpoint Of
A Line
We may quite often need to locate the midpoint of a line.
The method to locate the midpoint of a line is available in tool group II.
Construction
Of Angles.
The fundamental construct in geometry is a point. A point can be marked
anywhere in the plane. Examine the second tool in the tool box. And use it to
mark point on the plane. Draw a line by joining the points using the group III
tool from the tool box. When two lines intersect, they form angles. Select the
tool for measuring the angle, and select the angle which is to be
measured. Then, find out
the features of angles created by the intersection of lines.
Study About
Parallel Lines
Draw parallel lines using the tool in
Group III of the tool box. Draw another line which intersects these two lines.
Find out its features. To draw midpoint of a line, use the tool in Group II. To
measure the length of the line, helps the tool ‘segment with given length’.
Constuction
Of Polygons
The sides of a polygon is equal, such
polygons called regular polygons. As
the sides are of equal length, we need not draw each of the sides separately.
It should be enough to mark the two points that determine a side and instruct
the number of points required. Find
out the features of sides, and its interior angle. We can use the tool for
drawing polygons given in the group v, measure the sides and measure of
interior angle. Also we can find out the properties of vertices.
Constuction Of Circles
Make a point on the
plane. All the point equi distances from this point would form a circle. If you
provide the centre and radius of the circle that you intend to draw, we can
draw the circle using Geogebra. The tool circle with radius and centre in group
VI can be used for this.
Microsoft Excel
Microsoft Excel is a spreadsheet
application written and distributed by Microsoft for Microsoft windows. It
features calculations, graphing tools, pivot tables and a macro programming
language called VBA. It has been the most widely used spreadsheet application
available for these platforms since version 5 in1995 excel is part of MS
offoce.
Microsoft Excel is an electronic
spreadsheet that runs on a personal computer. You can use it to organise your
data into raws and columns. We can also use it to perform mathematical calculations
quickly. Spreadsheets are made up of colummns, rows and their intersections
are called cell. Formulas are enteries that have an equation that calculates
the value to display. We donot type in the numbers we are looking for; we type
in the equation. Formulas must begin with an equal sign. Spreadsheet have many
math functions built in to them. Of the most basic operations are the standard
addition, substraction, multiplication and division. These operations
follow the order of
operations. The ‘average’
functions finds the avethe
rage of the specified data. The ‘min’ funtion will return the smallest values in the
selected range of cells. The ‘count’ function will return the number of entries
in the selected range of cells. The ‘IF’
funtion will check the
logical conditions of as statement and return one value if true and a different
value if false.
CONCLUSION
There will be some advantage of
teaching geometry using technology. If we want to draw a geometrical shape and
we can change the length of sides or size of angle. If the figure is drawn on
the paper, the only way to draw the changes is taking the new paper. We will
get basic idea about geometry through this. Even though the consideration of
whole mathematical ideas self doing is the only way. In the case of an
analysis, it is a time consuming process. But it is very simple, less time
consuming when we use the technology. The basic property of mathematics is
addition, subtraction, multiplication, and division, and it will be easy and
quick enough. Computers fulfil the students interest in learning and encourage
some creativity. It provides easy access to horizon of information.
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