June 27, 2015

Why do we fear in Mathematics?

WHY DO WE FEAR IN MATHEMATICS?


Mathematics is considered as a dreadful subject by more than 90% of the people. A survey conducted by NCERT few years back showed that more than 50% of class V students are not able to do simple arithmetical calculation. The Annual Status of Education Report (ASER) 2011 pointed the situation something more alarming. The ASER report produced by a coalition of non- governmental organization has found that less than a third of class III students in rural Indian schools can solve two digits subtraction problems. The same trend was seen in the ASER 2012 report with almost citing the same problem and the surprising part of this report was that the performance of students in 2012 was not better even by 0.5 % as that of 2011. Now the big question is - - Why do we fear in mathematics?
Let me begin with a simple question---                       
How many of you would feel comfortable in declaring that you are not capable of reading?
II am sure none of you.                                        
But if I ask how many of you are not good at mathematics, some of you will answer in affirmative. It is quite acceptable in our society to say that – I can’t do mathematics. It is all because Mathematics has a tarnished reputation in our society. It is a commonly accepted facts that mathematics is difficult, obscure and of interest to certain people.

Why do People Hate Mathematics?

People hate mathematics because it requires them to think and forces them to give the correct and exact values. Math has a clear distinction of right and wrong. Most people love to speak about any issues but hate to accept the fact that they are wrong. Lack of good books, tarnished image in society, wrong teaching style and lack of confidence are some of the cause responsible for hatred of mathematics.
Let’s begin with some common examples:-
a)      When I look at math problem my mind goes completely blank. I fail to remember even the simplest things.
b)      I am not good at calculation so mathematics is not for me.
c)      Maths exam terrify me. My palms get sweaty. I breathe too fast and I can’t focus on my paper. When I see people around me working I feel myself stupid.
d)      Mathematics requires a special brain. I am not blessed with the special one so I can’t do mathematics. I can’t learn the formula as it is tough to understand.
e)      Mathematics is not for girls.
These are the common feeling among students. A feeling of intense frustration or helplessness about one’s ability to do math is known as MATHS ANXIETY.

Have you ever delivered a speech?
If your answer is yes, then go back in your old memory and recall your own situation when you went to the stage for the first time. I am sure you would say that you were nervous a lot. But if you are a regular speaker then certainly the fear factor or nervousness would have taken a back seat. The same is true for mathematics. One factor that affects math performance more than any other is confidence. Studies do show that positive thinking can improve math performance. Always believe in your own abilities and make it a habit of saying ---
 I CAN DO MATH.
I AM GOOD AT MATH.
Such sentences will boost your confidence level.
Do you know -- when does the most powerful leaning usually occur?
When one makes a mistake the learning process occurs most.
Never feel badly about making mistakes in math. Positive attitude towards math is the first step of success.
Let’s now try to find out the reason of Maths Anxiety.

a)      Social Acceptance: - People hate mathematics because it is acceptable in our societies. People are filled up with the notion that mathematics is a tough subject, it is for extra- ordinary people and it requires the inborn blessing to be good at maths. If you are terrible grammar you are made fun and looked down upon by your peers. However, if you have difficulty even doing simple maths, people make a joke of it. For example you will hear your peer or teacher saying- Ha-ha, do you need my calculator to figure out this problem. Not one person will come to support you that there is something wrong with that.

b)      Wrong Impression: - Mathematics is not tough but it is due to the prejudice eye that makes the impression that mathematics is tough. If your father was good at mathematics during his school days then he would expect you to be equally good in the subject. Consider the situation when a child does not perform well in a unit test and fails miserably then he is sure to be welcomed at home with the famous dialogue--- YOU ARE NOT SMART ENOUGH. MATHEMATICS IS NOT FOR YOU.  This feeling of inferiority and outright fear puts a heavy burden on the tender mind of a child and he begins to think himself not genius enough to cope up with mathematics.      Let me tell you the story of Albert Einstein.                                                            Albert Einstein failed in Algebra in his sixth grade and was expelled from the school. His father scolded him much for his inability to perform in Algebra. His maternal uncle was sure that Einstein would do well and decided to teach him Algebra. He took Einstein to the nearby jungle and politely asked --- Can you identify the bird flying in the sky? Einstein replied in negative. His maternal uncle laughingly said—Let the birds flying be x and took out a gun and fired a bullet. A bird fell dawn in the bushes. Einstein and his maternal uncle went to search the bird and found the dead bird was a CROW. Einstein said x = CROW. This was a simple story with a deep message hidden in it. Algebra is nothing but a process to reach the unknown. A simple story changed the life of Einstein that can happen with you. Always understand one thing that  Mathematics does not  inherently come with an intimidating force field, it is not inherently owned by someone like your father, teachers etc, it is not inherently a means for separating winners from losers, it is simply a collection of discoveries inviting your interest.
c)      Wrong teaching style: - I am sure many of you will not agree my view point but it is the ultimate truth. People who are good at math are treated as if they are super hero. Even the school teachers who are assigned the job to teach mathematics do hardly make any efforts to make mathematics learning a fun. They show no sympathy to the students who are poor at math on the contrary he/she tries to put the impression directly or indirectly that poor students should not do math. The result of this is an anti math bias at an impressionable age.  H J S Smiths writes: - Poor teaching leads to the inevitable idea that the subject (mathematics) is only adapted to peculiar minds, when it is the one universal science, and the one whose ground rules are taught us almost in infancy and reappear in the motions of the universe.                                                                                                                                                                       Let’s take some examples to understand the role of teachers in one’s life.                                                                                                                                                  Srinivas Ramanujan was a child prodigy but many of you know that when he was in third standard he asked his teacher why don’t we get quotient one when we divide zero by zero? His teacher rebuked him for asking such silly questions and disturbing the class. Most of the students face this situation in class. When he/she fails to understand a step and inquires the question related to that the teacher in most of the cases make him / her feel a second graded student. This result to his/ her frustration and distraction in mathematics in long run.  Here I would like to request all teachers to welcome the students who ask questions in the class. Answering questions with proper reasoning will make understanding of mathematics easier.  Now let me take one example of another child prodigy Carl Fredrick Gauss. His teacher Butner accepted the facts that there was nothing left to him that could be taught to Gauss.  With the help of King, Butner ensured that Gauss get scholarship for his study throughout his life.

d)      Men are Naturally Better than Woman at mathematical thinking: - There is not a 0.1% truth in this concept that mathematics is for men and women can’t do fairly well in mathematics. History tells the other version of story. Take the example of Hypatia of Alexandria. She was the first woman to make a substantial contribution to the development of mathematics. The list goes continuously. Thousands of woman mathematician have made their contribution in popularizing mathematics with their research and innovative ideas. Girls are generally discouraged by the parents, peers and teachers with the admonition that math “just is not something girls do”. The approach of teacher towards girls taking mathematics is not favorable. The subtle messages sent by teachers throughout the primary and secondary school years – perhaps without conscious intention that technical subjects are too hard for girls. This attitude practiced long is the reason of psychological fear among girls for taking a back foot when it comes to taking mathematics in higher education. There has been research examining gender difference in performance on standardized tests across various countries. But you will be astonished to know that Margaret Murray in her book – Women Becoming Mathematicians : Creating a Professional Identity in Post World War II America has shown that since 1980, women have earned over 17 percent of the mathematics doctorates in the United States.  We have seen that viewing intellectual or mathematical abilities as a gift can create vulnerability in females. It makes them susceptible to a lowered sense of belonging, to a loss of confidence, and to decrements in performance in the face of difficulty and in the presence of stereotypes. However, most important, we have also seen that sending a message that these abilities can be developed can alleviate the vulnerability. Females who heard this message- whether through an intervention or through a lesson that portrayed mathematical ability in this way- remained on a par with males in terms of their math grades, their achievement test score, and their performance on a very challenging maths exam.  Another research has shown that the female brains is more decentralized and have a greater ability to multitask because their cerebrum is more active. Women use a variety of parts of their brains when they do a single task. The female brain is more integrated with more complex connections between both hemispheres. Women can think logically and emotionally at the same time. Other tests have claimed that females are superior in language, verbal fluency, speed of articulation and grammar, also arithmetic calculation. In year 2005, Psychological scientist Stephen Ceci and Wendy Williams of Comell University set out to understand the difference between men and women in maths- intensive fields such as physics, electrical engineering, computer science, economics and chemistry and found that women’s choices not abilities keep them out of maths intensive fields.

e)      Mathematics requires an inborn attitude: - There is a general misconception that Mathematics requires an inborn attitude. Gauss, Pascal, Ramanujan etc. were the child prodigy who showed their early skill in mathematics at the very early age but there are numbers of mathematicians who were not good in mathematics in primary stage. Plato, Pythagoras, Newton, Einstein have had mathematical anxiety at their early age but later they overpowered mathematics with their mental strength. Researchers do believe the idea that there is no genius, no great contribution, without great efforts- not for Edison, Darwin, Mozart or virtually anyone you can name. despite the ‘legends’ , most geniuses put in years of intensive, even obsessive, labor before their potential reached fruition and they made the contributions we know them for.                                                                                                             Mathematics is indeed inborn, but it is inborn in all of us. It is the confidence level that matters the most. If you practice mathematics regularly and understand the fundamentals you are the ultimate winner. People who are good at math have an ability to see a problem in different ways. This is because they understand it. They apply varieties of mathematical rules to arrive at the result. On the other hand people who are bad a t maths stick to one procedure, the one they fell sure about and use it. Suppose you are to multiply 99 x 25. You can both do a long multiplication technique and arrive at the answer 2475 after a couple of minutes or break 99 = 100 – 1 using Distributive property you can break and then 99 x 25 = 25 x 100 – 25 x 1 = 2475.

f)       Teaching Style is to be blamed: - In many countries would be math teachers are required only to obtain a passing grade or more than 50 % marks in mathematics. What does it indicates? If a person joins a school as a mathematics teacher after obtaining just 51% marks in mathematics, it means he/she has failed to understand 49% of the math syllabus throughout his or her carrier. Now you can think about the alarming situation. In addition to this the teaching methodology is not student friendly. A method of solving a particular type of problem repeatedly before moving to next type is being followed for centuries. Such techniques make math learning a dull experience as no new ideas are generated in the monotonous environment.             
                                                Plutarch says – The mind is not a vessel to be filled. It is a fire to be kindled.  There is a general concept that if you are good at cramming tables, fast at calculation, you are certainly having a mathematical mind. During childhood we all use our fingers for simple arithmetical operations like – addition, subtraction and multiplication. But when we grow older we stop using fingers and calculate in mind as our education system put greater emphasize on mental calculation. There are many who can’t do calculation without using fingers but feel ashamed in using it because teachers in class discourage such practice even in upper primary level.                                                                                                   It is ridiculous.                                                                          What is the harm in counting on fingers? The ABACUS which is popular now a days and parents seem to be crazy in sending their children to coaching to make their sons/ daughters equipped with the Chinese technique of fast calculation is nothing but a sophisticated way of counting on fingers.  Our educational system is responsible for all this mess. A calculator can perform faster than most of us do. Does it mean calculator has a large brain? Such misconception is due to our education systems which emphasize finding solution by rote. This make the other who has not learnt large number of table to think that maths is not made for him because he/ she can’t perform fast calculation. There is one more problem that we emphasize more on getting correct answer rather than checking the correct process. Now the big question – is maths all about getting right answer?            The answer is a BIG NO. It is important that you do maths correctly answer will come out naturally. Many a times it happens that you do 90% of your calculation right and gets a single line written wrong or apply a wrong formula at the end and you are awarded zero marks. This should be seen in other ways that you are 90% correct and you will be given marks up to that stage. Here I am advocating the breaking up of the marks into several segments so that for every correct stage students gets rewarded. I am sure this practice at the very early stage will put a confidence in students. Always mind one thing that mathematics is not all about calculation. It is true that calculation is necessary in math, but it is not the largest part let alone the true goal of subject.

Now let’s try to find out the simplest way to overcome the Mathematical Anxiety.
Let me give you my own example. I still remember the day when I was in class 9. To deliver a speech on 15th August, my teacher called me on stage and in a fear I jumped the school boundary and flee away. Someone informed the principal and within few minutes 5 students came to my home and overpowered me and took me to school auditorium. My plan to skip the embarrassing situation failed. Though I delivered a 5 minutes long speech but the very next day I was suffering from a high fever. This episode had brought me in a very terrible situation. I skipped all functions of my school and college. 10 years later, I spoke publically and addressed the audience. Now it has become a routine job to address the audience in different seminars, symposium, convention etc and I face the situation boldly.
What I want to tell you with my story that once you get the confidence to face the situation boldly, you enjoy the thing. Mathematics can be done if you practice it regularly. Regularity brings the confidence and the success gets birth from confidence.

  1. Confidence is the key of Mathematics: - Mathematics is the backbone of life. The Kothari Commission says: - Mathematics should be taught on Compulsory basis to all pupils as a part of general education during the first ten years of schooling.                                              It means you can’t think to get rid of mathematics at least for the first ten years of your schooling. It means you have to give due importance to this subject. There is a wrong impression in the mind of people that mathematics is an insipid subject and it is designed for the talented people. If you think so, then first change your mind because mathematics is not the ancestral property of any white collared people. It is not for any caste or race. It is for all. First bring confidence in you and assure yourself that YOU CAN DO IT. The confidence comes with regular practice and understanding the subjects. Hey, then what are you waiting for? Be ready, take your pen and copy and be ready for practice. The more you practice with proper reasoning and understanding the more confidence you gain and that brings a positive change in your attitude towards mathematics and you begin to love it.
  2. Develop a good rapport with your teacher: - In class, develop a good rapport with your teacher and let him/ her know when you are feeling lost. Don’t wait for the class to over. Raise your hand the minute you feel uneasy. Mind one thing that your silence can bring a pressure on your mind resulting your distraction from the subject. So it is better to have the doubt clear. Always remember- your success is your teacher’s success. Teaching mathematics is an art which every teacher does not have. Those students who fall in right hands love mathematics.
  3. Always try to know WHY AND HOW in mathematics: - We focus too much on the HOW of arithmetic and calculation instead of WHY. A lot of the historical questions that caused people to pioneer new solutions or even develop new areas of mathematics is all due to their generalization of question WHY. The birth of Non- Euclidean Geometry is due to the questioning of Euclidean Geometry. Let me tell you a story. I was in 6th standard when Algebra was first introduced in our class. The teacher came and taught us some fundamental concept of algebra and wrote: -                                                                                                         7 – 5 = 2                                                                                                                                  5 – 7 = - 2                           I raised my hand to inquire why is 5 – 7 = - 2 but the teacher rebuked me for not being attentive in class.  In the very next class he wrote -                                          
        (+) x (+) = +                                                                                                                              ( - ) x ( - ) = + on the black board. 
Like others, I too noted down the mathematical formulas form the blackboard but could not understand the reasoning behind it. I raised my hand once again and the result was same. I was made to stand on the bench for asking such silly and childish question. I then went to a friend of my teacher Mr. Dheeran Ram and asked him why 5 – 7 = - 2? He gave a simple reasoning. Plus (+) means you are having that thing and minus (-) means that you are borrowing certain thing from your neighbor. Suppose you got 7 apples borrowed from your neighbor (i.e. – 7 ) and returned 5 apples (+5) so you are still in debt of 2 apples, hence 5 – 7 = -2.  Many a times, a simple reasoning can make your doubt clear and that happened with me. I, therefore advise you to ask your teachers, parents, elders, neighbors              etc. when you face any doubt however simple it may look to other. Even though all of us suffer from maths anxiety to some degrees but is a serious problem for some of us. If is like a burden that interfere with our lives, preventing in form achieving goals.                                                                                                                                       I would like to put one another example from my college days. I used to take tuitions in group with my batch mates. Many of my friends keep saying – yes sir, yes sir for every step my tutor used to write on paper despite the facts that they didn’t understand it properly. I was a problematic child for my teacher. Whenever I used to enquire the reason behind writing the certain step, my teacher used to scold me saying why did you take Mathematics Honors when you could not understand the basic thing? I later found my friends coming to my room to get the doubt clear. This is somewhat called suppression. This is a very common practice by students. Students don’t want their weakness to be known publically and in later phase it becomes the cause of their frustration. Understand one thing that feeling of maths anxiety is common and that it doesn’t mean that there is anything wrong with you or inferior about your ability to learn maths.          Find a friend or relative who are good at maths and whom you trust to respect your feelings. Share your negative thought about mathematics. Ask him to guide you to handle any odd situation that comes in the learning process.   
      
  1. Build Missing Blocks: -Maths is cumulative. In simple words, most math classes build on knowledge you have got in previous classes. If you avoided mathematics in lower grade then you will suffer in middle level. The same is true for other level. You may be feeling stressed out because your background is weak. You can overcome this situation easily by skimming through a text book that was written for a level slightly lower than your current class. The foundation of buildings is constructed with heavy iron rods, good quality cement etc. if the foundation is weak the building is sure to collapse in a year or two. The same theory applies here. If you were good at class 3 maths then surely you will do well in class 4th maths. The courses are designed by the expert committee in such a way that there is some inter relation between previous class and current class. So if you want to excel in mathematics you need to solid your knowledge of previous class. If you put off your math requirement, you will be faced with the unpleasant situation of having to learn new material and relearn all the forgotten material at the same time. Remember one thing –MATHS IS NOT A SPECTATOR SPORT! You must be actively involved in the learning process if you want to do well in maths.
  2. Make a habit of doing homework regularly: - Consider a situation after a particular class is over; teachers generally give homework base on the class work. One night you are sitting on your chain with class notes, text book to do home work. After writing few lines your pen stops. You begin to turn the exercises, class notes, and sometime in a puzzling mode call your friend over phone to check whether you have a clue.                                                          May I ask you a simple question?                                                            Have you read the class notes and text books before attempting to solve the problem? Probably not. Hey, what are you waiting for? Do it first. Maths is not a novel so take a pen and paper. Maths is a dense written book. Every line contains a deep idea that requires a novel way of thinking. It may take you half an hour to understand a single page. Work through the example until you understand the concept properly. Write each step on copy. It is better to write things down rather than highlighting. Once you have gone through the book, you are ready to work at the exercise.                                     Sir Isaac Newton wrote: - I keep the subject constantly before me and wait till the first dawning is open little by little into the full length.              
  3. Punctuality - Practice – Persistent: - My teacher used to say - Mathematics is made of 3 P’s- Punctuality- Practice – Persistent. Mathematics requires daily drilling. Make a habit of studying mathematics 2 hours – 3 hours a day. Choose time of your choice. The school text book has a limited number of sums so I would advise you to buy some reference book so that you may get varieties of problem.
  4. A good/ bad first exam score doesn’t mean you are good/ bad at maths: - If you get good marks in the first exam, don’t decide that you are brilliant enough and you need not work hard for the rest of exam. The good result or grade simply means you are doing justice with your maths subject. So don’t get cocky and be consistent in reading. On the other hand if you get bad score in exam, don’t jump on the conclusion that mathematics is not for you. All the bad score means is that you need to do a little more work for the next exam. I have seen many students getting A grade in first semester and ending with C grade in the exam whereas there are many who scored C grade in the first exam and finished with A grade in the final exam. Your score simply doesn’t translate into a course grade. There is a whole semester in front of you and lots of opportunities to improve your grade so don’t despair if you didn’t do as well as you wanted to on the first exam.
Let us sum up this chapter with some list of DO and DON’T.
LIST OF DO’S
·         Do use your reasoning ability to study mathematics.
·         Make a list of your strengths and weakness. Workout the area where you are weak. Take help from your teacher, parents and friends.
·         Attend class regularly and be attentive in the class.
·         Keep all the things on your study table neat and organized. You should not have to waste time searching for stuff each time you go for study.
·         Study 2-3 hours of mathematics with 1-2 break in between. An hour of concentrated uninterrupted study of maths with no break is sufficient to gain your confidence.
·         Find a quieter place in your house. If your table faces the window, move it against the wall so that you can’t see the child playing.
·         Make notes. Notes should consist primarily of concepts, explanation, reasoning etc.
·         Memorize definition, properties and important rules.
·         Use definition, concepts and deductive reasoning for every step in every exercise.
·         Answer questions/ ask questions. If you don’t understand the concept ask your teacher for its explanation. For every right answer pat yourself on the back. For every wrong answer take a vow that you will not repeat the same mistake.
·         Find a friend who is poor at mathematics. Teach him/her the chapter you have mastered well.
·         Make a list of formulas on a sheet of paper and paste it on the wall.
·         Read good quality reference book.
·         Make mathematics a fun. Convince yourself that mathematics is not all about calculation but it has fun side too. Read mathematical puzzle, game and quiz book in free time.
·         Review old test paper to become friendly of the question style.

DON’T

·         Read Mathematics book as a novel. Always take a pen and paper and write important steps.
·         Don’t cram the test.
·        
Don’t assume getting right answer is the ultimate goal.      Don’t try to study by only working problems. Solve some problem that has no solution and of different style.
·         Don’t hesitate to ask a question. Be assured that if you have a question more than one of your fellow students have the same questions and virtually all in the class can benefit from a discussion of your question.

·         Before moving to next chapter, get proper reading, problem solving of the previous chapter. Complete 1st then move 2nd. It is well said-                                                       It is better to learn everything of something            
                                                      rather than something of everything.

This is a chapter of one of my book Enrich your Maths Skill published by Prabhat Prakashan.
Please buy this book and read.

Send your comments at

Rajesh Kumar Thakur
rkthakur1974@gmail.com

June 20, 2015

Mathematics and Architect

             Mathematics and Architect

God ever geometrize:- Plato
 Plato it seems was right in his saying. The construction of buildings, railways, monuments etc need a mastery of geometry. Moreover the geometrical shape can be seen every where in the natural objects which perhaps god has created.

Can you tell me why is Mathematics called the queen of all subjects?

Probably, because there is no any field in the world which can survive without mathematics. It is not that only Scientists, Businessmen, Bank Employees, Share Brokers, Engineers, Architects use mathematics but even a common man can not do without mathematics. A coolie, a cobbler, a weaver, a grocer etc, etc all needs a simple arithmetic in their daily lives.

Your papa will certainly be the earning members of your family and your mummy must be executing the monthly budget to buy your books, dress, to pay the rent, to buy the house hold goods and to save certain amount of money for future; all these need a skillful calculation of mathematics.

In the early morning when you get up by hearing the sound of your alarm clock, what is your first reaction?

Oh, it is 6 o’clock!

This shows that your day begins with the numerals.

I .W.A.Young has rightly said-
Whenever we turn in these days of iron, steam and electricity we find that mathematics has been the pioneer. Were its backbone removed, our material civilization would inevitably collapse.

In the present chapter an effort has been made to show how much deep the root of mathematics is? Mathematics believes in truth and universal hood. It helps a person to think logically, to be patient and to speak the truth.

Mathematics does furnish the power for deliberate thought and accurate statement and to speak the truth. Gossip, flattery, slander, deceit all speak from a mind that has not been trained by mathematics – Dutton


Mathematics and Architect

The construction of high rise buildings, temples, historical monuments etc all require a great deal of mathematical work. In the Vedic era the risis used to build the altars for religious rites of sacrifice. The shapes of such altars were mostly a right angled triangle. A knotted rope of length 3, 4, 5 was used to make such altars. In the construction of temple of Athena Parthenos the Pythagorean Theorem was used. The length, breadth and height of the temple are 69.5m, 30.88m and 13.72m respectively which are in the ratio of 16 : 36 :81.

The use of golden triangle is evident in the construction of the pyramid. The Egyptian Architects had the knowledge of advanced mathematics that can be seen with the dimension of pyramids they had built. The maximum error in the length of the sides of the great pyramid is only 0.63 inches which is 1/14000 of the total length and also the   error in the angle at the pyramidal corner is no more than 12’’ of a degree i.e. 1/27000 of the angle 900.

Bombelli, Bramer, Wren, and Leonardo da Vinci are the few names who had shown their ability in both the fields as an Architect and as mathematicians.

               
             

                
 First layer of a Vedic sacrificial altar (in the shape of a falcon)


 It was believed that offering a sacrifice on such an altar would enable the soul of a supplicant to be conveyed directly to heaven by a falcon. A falcon shape altar used to be constructed in 5 layers with 200 brick for each layer making the total number of brick used in making alter was 200 x 5 = 1000 bricks. The bricks used for the platform were of 5 different shapes. These bricks were made by a special class of specialists. No burnt bricks were used for the purpose. Only the sun dried bricks were used for constructing the altar
(Picture Courtesy: http://www.athirathram.org)
The five types of bricks used to construct the falcon shape altar has been used here. 

Let’s see the modern building which is designed on some of mathematical shapes.



1. Mobius Strip Pagoda:- The Buddhist temple soon to be built in Taichang, China, takes shape of a Mobius ring, reflecting the basic principles of Buddhism and the idea of reincarnation.



2. Tetrahedral-Shaped Church
The tetrahedron is a convex polyhedron with four triangular faces. The structure consists of a tubular steel frame of 100 identical tetrahedrons. Each tetrahedron is 75'-0" long, weighs five tons, and is enclosed with clear aluminum panels. They are comprised of six-inch tubes with four-inch secondary cross-braces, which were manufactured in Missouri and shipped to the site by rail. Each tetrahedron is spaced a foot apart, which creates gaps in the framework that are filled with one-inch thick colored glass designed in Chartres, France. At the chapel level, the tetrahedrons between the spires are filled with a mosaic of colored glass in an aluminum frame. The structure rises 150'-0" from hinge to pinnacle, has an overall length of 280'-0", and is 84'-0" wide from hinge to hinge. The south-facing front façade has a wide granite stairway with steel railings capped by aluminum handrails and leads up to a one story landing. At the landing is a band of gold anodized aluminum doors. Above the doors is a glass wall. The triangular north façade consists of a glass curtain wall in an aluminum frame.




3. Experimental Math-Music Pavilion
Philips Pavilion in shape of asymmetric hyperbolic paraboloids is built in 1958 in Netherland


4. Cube Village
Cube Village is built by Dutch architect Piet Blom based on the concept of "living as an urban roof": high density housing with sufficient space on the ground level. Blom tilted the cube of a conventional house 45 degrees, and rested it upon a hexagon-shaped pylon. His design represents a village within a city, where each house represents a tree, and all the houses together, a forest.



5. Magic Square Cathedral
The Sagrada Familia cathedral in Barcelona designed by Antoni Gaudí is a mathematician’s dream. The cathedral also contains a Magic Square — an arrangement of numbers that equal the same amount in every column, row, and diagonal. The magic number in Sagrada Familia’s case is 33, which alludes to multiple religious symbols. For example, Jesus performed 33 recorded miracles, and most Christians believe he was crucified at 33 years old in 33 A.D.


 From the ancient time when pyramids and buildings were constructed using geometrical concept and applying engineering, the same is going in modern era. There are several other monuments, buildings in the world which are in shape of mathematical design and that as a mathematics lover we need to explore.

Don't forget to visit
 http://interschoolmathematics.pbworks.com/

where students  have explored mathematics and architect at par under the guidance of Ms. Rashmi Kathuria , a teacher at Kulachi Hansraj Model School, Ashok Vihar

Please wait for my new books that explore the Geometry in Vedic Era where I have tried to look Mathematics through Religious perspectives.

Enjoy exploring mathematics/
Do send me your comments to

Rajesh Kumar Thakur
rkthakur1974@gmail.com




Conversion of Different Units in seconds

Conversion made easy

This chapter is a mix of several different thing which is commonly used by students in competitive examination. The conversion of one unit into different is taught in primary level but still we don’t use it properly. Here we shall learn the conversion of –
1.      Temperature
2.      Km/h to m/s and vice versa
3.      Kilometer to Mile
4.      Pounds to Kilograms
5.      Adding time
Temperature
Conversion of Celsius degree to Fahrenheit and Fahrenheit to Celsius is simple if you learn the following formula-
0F = 9/5 C + 32
0C = (F – 32) × 5/ 9
The conversion of temperature using the above formula involves a lot of calculation and is boring but there is no other formula of conversion. So you can ask me whether there is any other short cut method which help us to change the temperature scale if not exact than closer to that. The answer is a big YES.
·         In order to change the Fahrenheit to Celsius; subtract 32 degrees and then halve the remainder.
·         To change Celsius to Fahrenheit, double the value and add 30.

Example: - Change 720F to 0C
Solution: - Let’s do it first using the short cut method and then using formula

Short Cut Method: - Subtract 32 = 72 – 32 = 40                                                                                                                 Halve the result = 40 ÷ 2 = 20

Using Formula: - 0C = (F – 32) × 5/ 9                                                                                                                                   = (72 – 32) × 5/9                                                                                                                                 = (40 × 5) ÷ 9 = 22.2
You can see that there is a slight variation in both the result but as told earlier that you can easily estimate the result by the short cut method.

Example: - Change 640F to 0C
Solution: - Let’s do it first using the short cut method and then using formula

Short Cut Method: - Subtract 32 = 64 – 32 = 32                                                                                                                 Halve the result = 32 ÷ 2 = 16
Using Formula: - 0C = (F – 32) × 5/ 9                                                                                                                                   = (64 – 32) × 5/9                                                                                                                                 = (32 × 5) ÷ 9 = 17.7
You can see that there is a slight variation in both the result but as told earlier that you can easily estimate the result by the short cut method.

Example: - Change 120C to 0F
Solution: - For changing the Celsius into Fahrenheit we need to change our calculation. First using the short cut method and then using formula
Short Cut Method: - Double the value = 12 × 2 = 24  
Add 30 = 24 + 30 = 54

Example: - Change 250C to 0F
Solution: - For changing the Celsius into Fahrenheit we need to change our calculation. First using the short cut method and then using formula
Short Cut Method: - Double the value = 25 × 2 = 50  
Add 30 = 50 + 30 = 80
Using Formula: - 0F = 9/5 C + 32
                                    = 9/5 × 25 + 32                                                                                                                                   = 45 + 32                                                                                                                                                                       = 77                                                                                    
                      This is pretty close to the exact value which will serve our purpose of estimation.

Kilometer/hour to meter/second
To change Km/h to m/s multiply the result by 5/18.
To change m/s to Km/h multiply the value by 18/5.

Example: - Change 72 km/h to m/s
Solution: - Multiply 72 by 5/18           = 72 × 5   = 20 m/s                                                                                                                                                             18
Example: - Change 64 km/h to m/s
Solution: - Multiply 64 by 5/18           =  64 × 5   = 17.7 m/s                                                                                                                                                         18
Example: - Change 15 m/s into Km/h
Solution: - Multiply 15 by 18/5           = 15 × 18   = 54 Km/h                                                                                                                                                             5
Example: - Change 45 m/s into Km/h
Solution: - Multiply 45 by 18/5           = 45 × 18   = 162 Km/h                                                                                                                                                        5

Kilometer to Mile
To convert Kilometer to mile divide the value by 8 and multiply the result obtained by 5

Example;- Convert 80 Km into mile
Solution:- Divide 80 by 8 = 80/8 = 10
                 Multiply by 5 = 10 × 5 = 50 mile

Example;- Convert 24 Km into mile
Solution:- Divide 24 by 8 = 24/8 = 3
                 Multiply by 5 = 3 × 5 = 15 mile

Kilogram to Pounds
·         To change kilogram to pounds multiply the result by 2.2. This can be simplified if you multiply the kilogram by 2 and divide the answer by ten. Now add both the result
·         To change pounds to kilograms divide the result by 2.2

Example: - Convert 65 Kg into Pounds
Solution: - 65 × 2.2 = 65 × 0.2 × 11 = 13 × 11 = 143
This can be done in three steps in the following way.
Multiply the result by 2 = 65 × 2 = 130
Divide the value by 10 = 130 ÷ 10 = 13
Add the two result = 130 + 13 = 143

Example: - Change 86 Kg into pounds
Solution: - Multiply 86 by 0.2 = 17.2
Multiply again by 11 = 17.2 × 11 = 189.2 pounds

Adding time
To add two times in Hour and Minutes you don’t have to worry at all. Add them as you simply do in addition. Once you have your answer, add 40 to it and you have the magical figure.

Example; Add 4 hours 34 minutes and 5 hours 57 minutes.
Solution: - Add 434 and 557                                                                                                                                
434 + 557 =991
Add 40 to it = 991 + 40 = 1031
Hence, 4 hours 34 minutes + 5 hours 57 minutes = 10 hours 31 minutes

Example; Add 6 hours 24 minutes and 2 hours 57 minutes.
Solution: - Add 624 and 257                                                                                                                               
 624 + 257 =881
Add 40 to it = 881 + 40 = 921
Hence, 6 hours 24 minutes + 2 hours 57 minutes = 9 hours 21 minutes

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Rajesh Kumar Thakur
rkthakur1974@gmail.com