An assignment on Concept Mapping, 
Simulation and Gradation. 
Assignment prepared by 
Shefsyn K.Y. 
Reg. No: 13 386 006 
B. Ed (Mathematics) 
STTC 
1
Concept Mapping 
Used to 
designate 
2 
Introduction to Concept Mapping 
Used as learning and teaching technique, concept mapping visually 
illustrates the relationships between concepts and ideas. Often represented in 
circles or boxes, concepts are linked by words and phrases that explain the 
connection between the ideas, helping students organize the structure their 
thoughts to further understand information and discover new relationships. Most 
concept maps represent a hierarchical structure, with the overall, broad concept 
first with connected sub-topics, more specific concepts, following. 
Number 
Imaginary 
used in 
Operations 
e.g 
Real 
Can be 
Quantities May represent 
has 
Different 
meanings 
for 
Multiply 
Can be 
Add Linear Nonlinear Specific 
Concept Map Example
Concept maps are a way to develop logical thinking and study skills, by 
revealing connections and helping students see how individual ideas forms a 
larger whole. 
Concept maps are flexible. They can be made simple or detailed, linear, 
3 
branched, radiating or cross-linked. 
 Linear concept maps are like flow charts that show how one 
concept or event leads to another. 
 Hierarchical concept maps represent information in a descending 
order of importance. The key concept is on top, and subordinate concepts 
fall below.
 Spider concept maps have a central or unifying theme in the center 
of the map. Outwardly radiating sub-themes surround the main theme. 
Spider concept maps are useful for brainstorming or at other times when 
relationships between the themes need to be open ended. 
 Cross-linked maps use a descriptive word or phrase and identify 
the relationship with a labeled arrow. 
4 
Definition of a Concept Map 
A Concept Map is a type of graphic organizer used to help students 
organizer used to help students organize and represent knowledge of a subject. 
Concepts maps begin with a main idea (or concept) and then branch out to show 
how that main idea can be broken down into specific topics.
5 
Benefits of Concept Mapping 
Concept Mapping sires several purposes for learners. 
 Helping students brainstorm and generate new ideas. 
 Encouraging students to discover new concepts and the propositions that 
connect them. 
 Allowing students to more clearly communicate ideas, thoughts and 
information. 
 Helping students integrate new concepts with older concepts. 
 Enabling students to gain enhanced knowledge of any topic and evaluate 
the information. 
How to build a Concept Map 
Concept maps are typically hierarchical, with the subordinate counts 
stemming from the main concept or idea. This type of graphic organizer 
however, always allows change and new concepts to be added. The 
Rubber sheer analogy stated that concept positions on a map can 
continuously change, while always maintaining the same relationship with 
the other ideas on the map. 
 Start with a main idea, or issue to focus on. 
A helpful way to determine the context of your concept map is to choose a 
focus question something that needs to be solved or a conclusion that 
needs to be reached. Once a topic or question is decided on, that will help 
with the hierarchical structure of the concept map. 
 Then determine the key concepts. 
Find the key concepts that connect and relate to your main idea and rank 
them most general inclusive concepts come first then link to smaller more 
specific concepts.
 Finish by connecting concepts creating linking phrases and words. 
Once the basic links between the concepts are created, add cross – links, 
which connect concepts in different areas of the map, to further illustrate 
the relationships and strengthen students understanding and knowledge on 
the topic. 
6 
Concept Maps in Education 
When created correctly and thoroughly, concepts mapping is a powerful 
way for students to reach high levels of cognitive performance. A concept map is 
also not just a learning tool, but an ideal evaluation tool for educators measuring 
the growth of and assessing student learning. As students create concept maps, 
they reiterate ideas using their own words and help identify incorrect ideas and 
concepts, educators are able to see what students do not understand providing an 
accurate objective way to evaluate areas in which students do not get grasps 
concepts fully. 
Inspiration software , Webspiration classroom and Kidspiration 
classroom service all contain diagram views that makes it easy for students to 
create concept maps, students are able to add new concepts and links as they see 
fit. Inspiration, inspiration and respiration classroom also come with a variety of 
concept map examples, templates and lesson plans to show how concept 
mapping and the use of other graphic organizer can easily be integrated into the 
curriculum to enhance learning comprehension and writing skills.
SIMULATION 
May topics in mathematics that have immediate utility value can be best 
introduced using the technique of simulation that is enacting a real situation in 
the class. Topics that have relation with commercial concern are an example. 
The functioning of a co-operative society or bank can be cited as examples. First 
the students may be taken to such institutions to observe the nature and 
techniques of the various activities going on there. Notes may be taken. In order 
to reinforce and to make the activity more familiar the working of such 
institutions may be enacted in the class. The simulation should be carefully 
arranged so as to make the insight as meaningful as possible. 
For example, there is a school co-operative society. The working of the 
society may be observed and the salient features of how it was organized and 
what the activities taken up are noted. Then imagine that the learners are 
planning to start a class co-operative society. The steps such as selling of shares 
to pool the capital required election of various office bearers, nature of 
transaction involved (together with the related mathematical skills) the style of 
keeping records concerning the various aspects including the account book the 
technique of preparing a balance sheet, calculation and dispersal of dividends to 
the share holders etc may be simulated. 
In the same way the activates in a Bank, which special reference to the 
mathematical calculations involved (Such as deposits and withdrawals, 
calculation of interests at various rates other money transaction giving loans etc.) 
may be simulated in a realistic matter. 
This will not only help in realizing the utility value of mathematics, but 
also will give realistic insights into the related commercial mathematics. Further 
the roles played in simulation will create interest among the learners. 
7
8 
Definitions of Simulation 
1. R. Wynn (1964): ‘Simulation is an accurate representation of 
realistic situation.’ 
2. W.R. Fritz (1965): ‘Simulation may be considered as a 
dynamic implementation of a model representing a physical or 
a mathematical system.’ 
Simulation in Education 
The International Dictionary of education defines the term as ‘teaching 
technique used particularly in management education and training in which a 
‘real life situation’ and values are simulated by ‘substitutes’ displaying similar 
characteristics.’ It also means ‘Techniques in teacher education in which 
students act out or role play teaching situations’ and values are simulated by 
‘Substitutes’ displaying similar characteristics. It also means “Techniques in 
teacher education in which students act out or role play teaching situations in an 
attempt to make theory more practically oriented and realistic” 
What is its purpose? 
Simulations promote concept attainment through experiential practice. 
Simulations are effective at helping students understand the nuances of a concept 
or circumstance. Students are often more deeply involved in simulations than 
other activities. Since they are living the activity the opportunity exists for 
increased engagement. 
Advantages 
 Enjoyable, motivating activity.
 Element of reality of compatible with principles of constructivism. 
 Enhances appreciation of the more subtle aspects of a concept / principle. 
9 
 Promotes critical thinking. 
Disadvantages 
 Preparation time 
 Cost can be an issue 
 Assessment is more complex than some traditional teaching methods. 
How do I do it? 
 Ensure that students understand the procedures before beginning. It 
improves efficacy if the students can enjoy uninterrupted 
participation. Frustration can arise with too many uncertainties’. 
This will be counterproductive. 
 Try to anticipate questions before they are asked. The pace of 
some simulations is quick and the sense of reality is best 
maintained with ready responses. Monitor student progress. 
 Know what you wish to accomplish. Many simulations can have 
more than one instructional goal. Developing a rubric for 
evaluation is a worthwhile step. If appropriate, students should be 
made aware of the specific outcomes expected of them. 
Gradations 
For effective teaching, concepts should be introduced step by step. This is 
called Gradation. For students, to discover mathematical principles by their own, 
it must be presented in a gradation way. The teaching should be proceeding from 
simple to complex. This teaching technique is good for gradation. 
Psychologically this is very important principle. If complex concepts introduce 
from the beginning, that teaching will be ineffective. That will affect student's
confidence level and it makes concept attainment more difficult. Moreover they 
can’t understand concepts on heuristic method by their own. 
Let’s look at an example. Take the lesson addition. It can be arranged different 
stages according to the difficulty level. 
Stage 1: Primary addition facts – Sum that does not exceed 10 e.g:4+3=7 
Stage 2: Primary additions fact – Sum that is greater than 10 e.g.: 7+5=12 
Stage 3: Adding 3 or 4 numbers using primary addition facts e.g.: 
5+4+5=14. 
Stage 4: Adding secondary addition facts using primary addition facts. 
E.g. – tens place value not changing. E.g. 5+2=7, likewise 
10 
15+2=17 
Stage 5: Secondary addition facts – changing tens place value e.g. 7+5 = 
12, likewise 17+5=22 
Stage 6: Two two digit numbers addition – those with no remainders in 
both positions. E.g. 22 + 33 
Stage 7: Two two digit numbers addition. Where remainder comes only in 
one position e.g. 45+37 
Stage 8: Two two digit numbers – where zero will come as a result in ones 
place value. E.g. 35+45 
Stage 9: Two two digit numbers – where remainder comes also in tens 
place value e.g. 75+48 
Stage 10: Adding 3 or 4 one digit numbers e.g. 7+5+8+4 
Stage 11: Including one digit & 2 digit numbers. E.g. 48+7+16+6
11 
Stage 12: Two three digit numbers. 
Stage 13: Three two digit numbers etc. 
By introducing stage wise addition facts mentioned above, that will 
enable the addition principles which discover by the students their own and it 
will makes the teaching effective. The main thing to be notices is that we should 
proceed to the next stage only after the successful completion of each stage. 
Maintaining the motivation by giving reinforcement through formative 
evaluation. Understanding addition facts or any other mathematical facts is very 
difficult for students without gradation. Moreover, because of the difficulty from 
the vague concepts, students will feel afraid of mathematics. 
In mathematics, all lessons we can teach like this. Gradation will make 
the teaching meaningful. After the teaching is completed, each question should 
give using gradation principles. That way start with simple problems then 
difficult problems, this order has to be followed when giving problems. 
Gradation is not including in subjects that also include in teaching 
learning process. Like, concrete to abstract, simple to complex, empirical to 
rational and known to unknown etc. These all gradation principles are using in 
teaching learning process. A teacher should acquire a skill to start a class by 
giving familiar facts and experiences for students. Piaget’s thoughts on cognitive 
domain to make it firm through accommodation & assimilation in each steps, 
and Gagne’s idea on chaining put more light into these gradation theory. 
These all gradation principles are also known as maxims of teaching. The 
maxims of teaching are very helpful in obtaining the active involvement and 
participation of the learners in the teaching learning process. They make learning 
effective, inspirational, interesting and meaningful. A good teacher should be 
quite familiar with them.
1. Proceed from the known to unknown. 
The most natural and simple way of teaching a lesson is to proceed from 
something that the students already know to those facts which they do not 
know. What is already known to the students is of great use to the 
students. This means that the teacher should arouse interest in a lesson by 
putting questions on the subject matter already known to the pupils. 
2. Proceed from simple to complex. 
The simple task or topic must be taught first and the complex one can 
follow later on. The word simple and complex are to be seen from the 
point of view of the child and not that of an adult. 
3. Proceed from easy to difficult. 
We must graduate our lessons in order of case of understanding them. 
Student's standard must be kept in view. This will help in sustaining the 
interest of the students. There are many things which look easy to us but 
are in fact difficult for children. The interest of the child has also to be 
taken into account. 
4. Proceed from concrete to the abstract. 
A child’s imagination is greatly aided by a concrete material. “Things 
first and words after” is the common saying. Rousseau said, “Things, 
Things, Things, “Children in the beginning cannot think in abstractions. 
Small children learn first from things which they can see and handle. 
5. Proceed from particular to general. 
Before giving Principles and rules, particular examples should be 
presented. As a matter fact a study of particular facts should lead the 
children themselves to frame general rules. The rules of arithmetic, of 
12
grammar, of physical geography and almost of all sciences are based on 
the principles of proceeding from particular instances to general rules. 
6. Proceed from indefinite to definite. 
Ideas of children in the initial states are indefinite, incoherent and very 
vague. These ideas are to be made definite, clear, precise and systematic. 
7. Proceed from empirical to rational. 
Observation and experiences are the basis of empirical knowledge. 
Rational knowledge implies a bit of abstraction and argumentative 
approach. The general feeling is that the child first of all experiences 
knowledge in his day to day life and after that the feels the rations bases. 
8. Proceed from whole to parts. 
Whole is more meaningful to the child than the parts of the whole. 
13 
9. From near to far. 
A child learns well in the surroundings in which he resides. So he should 
be first acquainted with his immediate environment. 
10. From analysis to synthesis. 
Analysis means breaking a problem into convenient parts and synthesis 
means grouping these separated parts into one complete whole. A 
complex problem can be made simple and easy by dividing it into units.
14 
References 
en. wikipedia. Org / wiki / concept – map 
www.inspiration .com / visual – learning / concept – mapping 
Users. edte. utwente. nl / lanzing / cm-home. htm 
olc. Spsd.sk.ca/De/PD/inst/r/strats/simul/index 
Dark. Soman. (2010). ‘ 
Ganitha shastrabhodhanam’. Kerala: The state institute, of languages. 
Dr. K. Soman, Dr. K. Sivarajan. (2008). ‘Mathematics Educations’. Calicut: 
Calicut Universtiy.

Concept mapping, Simulation, Gradation

  • 1.
    An assignment onConcept Mapping, Simulation and Gradation. Assignment prepared by Shefsyn K.Y. Reg. No: 13 386 006 B. Ed (Mathematics) STTC 1
  • 2.
    Concept Mapping Usedto designate 2 Introduction to Concept Mapping Used as learning and teaching technique, concept mapping visually illustrates the relationships between concepts and ideas. Often represented in circles or boxes, concepts are linked by words and phrases that explain the connection between the ideas, helping students organize the structure their thoughts to further understand information and discover new relationships. Most concept maps represent a hierarchical structure, with the overall, broad concept first with connected sub-topics, more specific concepts, following. Number Imaginary used in Operations e.g Real Can be Quantities May represent has Different meanings for Multiply Can be Add Linear Nonlinear Specific Concept Map Example
  • 3.
    Concept maps area way to develop logical thinking and study skills, by revealing connections and helping students see how individual ideas forms a larger whole. Concept maps are flexible. They can be made simple or detailed, linear, 3 branched, radiating or cross-linked.  Linear concept maps are like flow charts that show how one concept or event leads to another.  Hierarchical concept maps represent information in a descending order of importance. The key concept is on top, and subordinate concepts fall below.
  • 4.
     Spider conceptmaps have a central or unifying theme in the center of the map. Outwardly radiating sub-themes surround the main theme. Spider concept maps are useful for brainstorming or at other times when relationships between the themes need to be open ended.  Cross-linked maps use a descriptive word or phrase and identify the relationship with a labeled arrow. 4 Definition of a Concept Map A Concept Map is a type of graphic organizer used to help students organizer used to help students organize and represent knowledge of a subject. Concepts maps begin with a main idea (or concept) and then branch out to show how that main idea can be broken down into specific topics.
  • 5.
    5 Benefits ofConcept Mapping Concept Mapping sires several purposes for learners.  Helping students brainstorm and generate new ideas.  Encouraging students to discover new concepts and the propositions that connect them.  Allowing students to more clearly communicate ideas, thoughts and information.  Helping students integrate new concepts with older concepts.  Enabling students to gain enhanced knowledge of any topic and evaluate the information. How to build a Concept Map Concept maps are typically hierarchical, with the subordinate counts stemming from the main concept or idea. This type of graphic organizer however, always allows change and new concepts to be added. The Rubber sheer analogy stated that concept positions on a map can continuously change, while always maintaining the same relationship with the other ideas on the map.  Start with a main idea, or issue to focus on. A helpful way to determine the context of your concept map is to choose a focus question something that needs to be solved or a conclusion that needs to be reached. Once a topic or question is decided on, that will help with the hierarchical structure of the concept map.  Then determine the key concepts. Find the key concepts that connect and relate to your main idea and rank them most general inclusive concepts come first then link to smaller more specific concepts.
  • 6.
     Finish byconnecting concepts creating linking phrases and words. Once the basic links between the concepts are created, add cross – links, which connect concepts in different areas of the map, to further illustrate the relationships and strengthen students understanding and knowledge on the topic. 6 Concept Maps in Education When created correctly and thoroughly, concepts mapping is a powerful way for students to reach high levels of cognitive performance. A concept map is also not just a learning tool, but an ideal evaluation tool for educators measuring the growth of and assessing student learning. As students create concept maps, they reiterate ideas using their own words and help identify incorrect ideas and concepts, educators are able to see what students do not understand providing an accurate objective way to evaluate areas in which students do not get grasps concepts fully. Inspiration software , Webspiration classroom and Kidspiration classroom service all contain diagram views that makes it easy for students to create concept maps, students are able to add new concepts and links as they see fit. Inspiration, inspiration and respiration classroom also come with a variety of concept map examples, templates and lesson plans to show how concept mapping and the use of other graphic organizer can easily be integrated into the curriculum to enhance learning comprehension and writing skills.
  • 7.
    SIMULATION May topicsin mathematics that have immediate utility value can be best introduced using the technique of simulation that is enacting a real situation in the class. Topics that have relation with commercial concern are an example. The functioning of a co-operative society or bank can be cited as examples. First the students may be taken to such institutions to observe the nature and techniques of the various activities going on there. Notes may be taken. In order to reinforce and to make the activity more familiar the working of such institutions may be enacted in the class. The simulation should be carefully arranged so as to make the insight as meaningful as possible. For example, there is a school co-operative society. The working of the society may be observed and the salient features of how it was organized and what the activities taken up are noted. Then imagine that the learners are planning to start a class co-operative society. The steps such as selling of shares to pool the capital required election of various office bearers, nature of transaction involved (together with the related mathematical skills) the style of keeping records concerning the various aspects including the account book the technique of preparing a balance sheet, calculation and dispersal of dividends to the share holders etc may be simulated. In the same way the activates in a Bank, which special reference to the mathematical calculations involved (Such as deposits and withdrawals, calculation of interests at various rates other money transaction giving loans etc.) may be simulated in a realistic matter. This will not only help in realizing the utility value of mathematics, but also will give realistic insights into the related commercial mathematics. Further the roles played in simulation will create interest among the learners. 7
  • 8.
    8 Definitions ofSimulation 1. R. Wynn (1964): ‘Simulation is an accurate representation of realistic situation.’ 2. W.R. Fritz (1965): ‘Simulation may be considered as a dynamic implementation of a model representing a physical or a mathematical system.’ Simulation in Education The International Dictionary of education defines the term as ‘teaching technique used particularly in management education and training in which a ‘real life situation’ and values are simulated by ‘substitutes’ displaying similar characteristics.’ It also means ‘Techniques in teacher education in which students act out or role play teaching situations’ and values are simulated by ‘Substitutes’ displaying similar characteristics. It also means “Techniques in teacher education in which students act out or role play teaching situations in an attempt to make theory more practically oriented and realistic” What is its purpose? Simulations promote concept attainment through experiential practice. Simulations are effective at helping students understand the nuances of a concept or circumstance. Students are often more deeply involved in simulations than other activities. Since they are living the activity the opportunity exists for increased engagement. Advantages  Enjoyable, motivating activity.
  • 9.
     Element ofreality of compatible with principles of constructivism.  Enhances appreciation of the more subtle aspects of a concept / principle. 9  Promotes critical thinking. Disadvantages  Preparation time  Cost can be an issue  Assessment is more complex than some traditional teaching methods. How do I do it?  Ensure that students understand the procedures before beginning. It improves efficacy if the students can enjoy uninterrupted participation. Frustration can arise with too many uncertainties’. This will be counterproductive.  Try to anticipate questions before they are asked. The pace of some simulations is quick and the sense of reality is best maintained with ready responses. Monitor student progress.  Know what you wish to accomplish. Many simulations can have more than one instructional goal. Developing a rubric for evaluation is a worthwhile step. If appropriate, students should be made aware of the specific outcomes expected of them. Gradations For effective teaching, concepts should be introduced step by step. This is called Gradation. For students, to discover mathematical principles by their own, it must be presented in a gradation way. The teaching should be proceeding from simple to complex. This teaching technique is good for gradation. Psychologically this is very important principle. If complex concepts introduce from the beginning, that teaching will be ineffective. That will affect student's
  • 10.
    confidence level andit makes concept attainment more difficult. Moreover they can’t understand concepts on heuristic method by their own. Let’s look at an example. Take the lesson addition. It can be arranged different stages according to the difficulty level. Stage 1: Primary addition facts – Sum that does not exceed 10 e.g:4+3=7 Stage 2: Primary additions fact – Sum that is greater than 10 e.g.: 7+5=12 Stage 3: Adding 3 or 4 numbers using primary addition facts e.g.: 5+4+5=14. Stage 4: Adding secondary addition facts using primary addition facts. E.g. – tens place value not changing. E.g. 5+2=7, likewise 10 15+2=17 Stage 5: Secondary addition facts – changing tens place value e.g. 7+5 = 12, likewise 17+5=22 Stage 6: Two two digit numbers addition – those with no remainders in both positions. E.g. 22 + 33 Stage 7: Two two digit numbers addition. Where remainder comes only in one position e.g. 45+37 Stage 8: Two two digit numbers – where zero will come as a result in ones place value. E.g. 35+45 Stage 9: Two two digit numbers – where remainder comes also in tens place value e.g. 75+48 Stage 10: Adding 3 or 4 one digit numbers e.g. 7+5+8+4 Stage 11: Including one digit & 2 digit numbers. E.g. 48+7+16+6
  • 11.
    11 Stage 12:Two three digit numbers. Stage 13: Three two digit numbers etc. By introducing stage wise addition facts mentioned above, that will enable the addition principles which discover by the students their own and it will makes the teaching effective. The main thing to be notices is that we should proceed to the next stage only after the successful completion of each stage. Maintaining the motivation by giving reinforcement through formative evaluation. Understanding addition facts or any other mathematical facts is very difficult for students without gradation. Moreover, because of the difficulty from the vague concepts, students will feel afraid of mathematics. In mathematics, all lessons we can teach like this. Gradation will make the teaching meaningful. After the teaching is completed, each question should give using gradation principles. That way start with simple problems then difficult problems, this order has to be followed when giving problems. Gradation is not including in subjects that also include in teaching learning process. Like, concrete to abstract, simple to complex, empirical to rational and known to unknown etc. These all gradation principles are using in teaching learning process. A teacher should acquire a skill to start a class by giving familiar facts and experiences for students. Piaget’s thoughts on cognitive domain to make it firm through accommodation & assimilation in each steps, and Gagne’s idea on chaining put more light into these gradation theory. These all gradation principles are also known as maxims of teaching. The maxims of teaching are very helpful in obtaining the active involvement and participation of the learners in the teaching learning process. They make learning effective, inspirational, interesting and meaningful. A good teacher should be quite familiar with them.
  • 12.
    1. Proceed fromthe known to unknown. The most natural and simple way of teaching a lesson is to proceed from something that the students already know to those facts which they do not know. What is already known to the students is of great use to the students. This means that the teacher should arouse interest in a lesson by putting questions on the subject matter already known to the pupils. 2. Proceed from simple to complex. The simple task or topic must be taught first and the complex one can follow later on. The word simple and complex are to be seen from the point of view of the child and not that of an adult. 3. Proceed from easy to difficult. We must graduate our lessons in order of case of understanding them. Student's standard must be kept in view. This will help in sustaining the interest of the students. There are many things which look easy to us but are in fact difficult for children. The interest of the child has also to be taken into account. 4. Proceed from concrete to the abstract. A child’s imagination is greatly aided by a concrete material. “Things first and words after” is the common saying. Rousseau said, “Things, Things, Things, “Children in the beginning cannot think in abstractions. Small children learn first from things which they can see and handle. 5. Proceed from particular to general. Before giving Principles and rules, particular examples should be presented. As a matter fact a study of particular facts should lead the children themselves to frame general rules. The rules of arithmetic, of 12
  • 13.
    grammar, of physicalgeography and almost of all sciences are based on the principles of proceeding from particular instances to general rules. 6. Proceed from indefinite to definite. Ideas of children in the initial states are indefinite, incoherent and very vague. These ideas are to be made definite, clear, precise and systematic. 7. Proceed from empirical to rational. Observation and experiences are the basis of empirical knowledge. Rational knowledge implies a bit of abstraction and argumentative approach. The general feeling is that the child first of all experiences knowledge in his day to day life and after that the feels the rations bases. 8. Proceed from whole to parts. Whole is more meaningful to the child than the parts of the whole. 13 9. From near to far. A child learns well in the surroundings in which he resides. So he should be first acquainted with his immediate environment. 10. From analysis to synthesis. Analysis means breaking a problem into convenient parts and synthesis means grouping these separated parts into one complete whole. A complex problem can be made simple and easy by dividing it into units.
  • 14.
    14 References en.wikipedia. Org / wiki / concept – map www.inspiration .com / visual – learning / concept – mapping Users. edte. utwente. nl / lanzing / cm-home. htm olc. Spsd.sk.ca/De/PD/inst/r/strats/simul/index Dark. Soman. (2010). ‘ Ganitha shastrabhodhanam’. Kerala: The state institute, of languages. Dr. K. Soman, Dr. K. Sivarajan. (2008). ‘Mathematics Educations’. Calicut: Calicut Universtiy.