Some things about science education in the school.
steemstem·@toushik·
0.000 HBDSome things about science education in the school.
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At the Christmas ceremony, I had a magic show at the school. Magic is not magic, but the magic of science is used by using magic.
In this example , glass and the refractive index near Glycerin. So if you put glycerin in the diarrhea and sink a small block of glass inside it, nobody will see the glass block. If you put a stone on the glass block, it seems that the stone is floating on the water ! Many more such magic The magic of science ( literally, by itself ) was the first to get the fun of it.
This magic , science model exhibition, etc., except for some occasions, the education of early childhood science was quite annoying . I think , the most students to the West will agree with me . My objective in this article is to keep a few opinions about how to make science education interesting in school life. Many scientists and philosophers have studied theories of pedagogy. I'm not saying that here. I have tried to highlight some of these articles in the article that I have felt while researching science. College students and teachers in the school of the important issues - teacher will be discussed in my effort seems to have been somewhat successful.
## <center>Horror of text book</center>
In childhood (class XII , West Bengal Central and Higher Education Board ), one of the syllabus text books of science did not even think. Even thinking about the books yet Abdi are afraid ! The books seem to be written only by looking at the examination. The outer universe that could shake the minds of the child or the teenager on his or her intense mystery , felt that those who wrote syllabuses and those who wrote books based on them did not come to the head. It seems that the lack of any lack of reading science books never realized that we have not yet answered the answer to any science question ,Thousands of scientists are working day and night behind the question. As it did not realize that in the last ten years the world has been invented as a shelf. That is not to understand that the science is an ongoing thing , one of the objectives of reading it is to know the unknown world , that means the world has not yet been known , try to know him.
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At the beginning of most chapters in the science book, there was a bold obfuscation. Some students in newspapers and magazines - examined - Many masters advised to go out in favor of the honor . Many of them had said that the thick black letters we read in the morning and in the morning we read the memories. As 'polymorphism' - the definition of a word that can not be excluded - to form one. Let us make it happen. And, in the right place, we will snatch it. The paragraph of the example was in the books after thick black letters of the definition. It is imperative but it is more important to read the definition!
## <center>Science - special knowledge</center>
I grew up - This Counterclockwise ! In the world of science research, the first example is to work on a special example for many years. For example, physics is researched on one or a few minor substances. In biology, it is attempted to understand that a special animal - such as the Drosophila fly, or the mouse. By carefully understanding these specific samples, scientists try to find answers to some common questions. For example, what is the religion of electron in the substance, or the deeper questions of genetics
>Before childhood I was advised to memorize the definition, but when I grew up, I was reversed!
In this context, we can think of a good movie. Slowly opened the plot there. The characters are introduced with the audience through a few small scenes and dialogues. From these, the main point of the film comes out slowly. If at the beginning of the film there would have been written in thick ink - "The subject matter of this part of the film is such and such , look for the following five scenes with the attention." , Would not it be boring , even ridiculous ? It is also about science (or any other subject). The first thing to read is to create a curiosity and surprise - then the students will take the rest of the work themselves. He does not have to emphasize the rationale for thick letters.
Carbon atoms can be arranged in many ways, such as the two-dimensional decoration of the
graphene (left) and the flowery of football (right)
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In the example of plurality , it is interesting that the carbon molecules can be arranged in many ways. This fun is not meant to memorize definitions at the beginning of the chapter. At the beginning, it is necessary to understand how carbon atoms can be arranged in different ways - make models for them , or have a good picture. Students will start playing how carbon atoms are arranged 1, 2. They will find themselves out of the game that carbon atoms can be sorted in different ways, even like football! When this concept is made, the teacher can ask - "Is this sort of carbon atoms differently, will it be different from each other to see?" In most cases it will not be difficult to find the answer (Google and Wikipedia itself). The question arises, why is it very difficult to find a very difficult substance, and in a similar way, slippery is a substance? In a similar way, the electrocution of the electromagnetism, in other ways, is very high quality! Many questions can not be answered in an early age, but these questions will later be the inspiration to know the world around.
## <center>Identity unknown - Digit behind the envelope!</center>
We learn new science as we know science, and also know the unknown world. Trying to realize him. Most of the time, in the current system of education, what I learned with the new ones, what I learned earlier, often there is no added. I knew about a lane in the front of the damn, but I did not understand the whereabouts of the lane, or how to go there, in relation to my house in Potaldanga. New education does not involve our feeling, increase the burden of the note made for the exam. So, if you can forget it by writing the test book and you can not forget it.
>Most of the time, it is often seen that what we learned earlier, with what we have learned, is often not added.
Let's give a simple example.
From childhood, how far away from the solar system the planets of the solar system. The sun is fifteen billion kilometers away from the Earth . But the difficulty is ' fifteen million kilometers' - how far is that idea of us ? It takes twenty minutes to go to school for two kilometer walks. It takes an hour to go home for one hundred kilometers away from the uncle's house. Calcutta to Delhi, the distance of one thousand and a half kilometers - takes a few hours to a couple of kilometers . There is a relationship with our experience with the distance of two kilometers or one thousand and half kilometers . But fifteen million ? How big is it to understand ? So , Earth's distance from the sun to us as a number to memorize stayed , feeling or 'inatuisana' - with the added is not. Again, how big is the earth , sun or big , this picture is not in the picture !
This kind of new information can be linked to our feelings in many ways. For example, an aircraft that takes one to one and a half hours from Calcutta to Delhi, how long will it take from the earth to the sun at the same speed? The answer can be easily divided by the speed of the distance - about seventeen years! Again, the matter is considered in another way. Let's say, the size of the earth is like a rosary from a five centimeter diameter. So how far will the sun be on this scale ? I can squeeze a piece of paper and apply the same rules. The Earth's diameter is roughly 12 , 800 kilometers , it has reduced it to 5 centimeters , then fifteen million kilometers will be ' 5 centimeters x 15 million / 12 , 800' Equal about 600 meters. But now we have an idea about the solar system. I took a picture of the table at the top of mind as rasagollata earth , and five minutes - six went to get the sun. But the sun is not the point ! Its diameter is about 14 million kilometers. Then we will take a look at the unique rules that in our example, the sun will be around five and a half meters, roughly like a big room. The square is not square , of course , rough round.
Back-of-the-envelope calculation is very important in science
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The fact that this coincidence took a conjecture, scientists called it ' back-of-the-envelope calculations ' . This means that the amount can be made very quickly after the back of the envelope. In this way, we will understand the universe better and more so personally . I can feel strangers with the help of the chain . To understand how much space in the universe!
>Just do not remember the information, the unknown information will be felt by the hand.
The image that I made in the mind of the earth and the sun's size and distance , there are many more questions answered. As someone questioned the earth and the gravitational force in the sun, how can I figure out ? That's the question, but it's tough. Because the Newton's gravitational formula tells how to find the force in two points , but the earth and the sun are not the dots. Then ?
I did not think of the picture again. In my reading table, the world of the size of the lasagulla, and a five-minute walk away, a house-sized sun But from such a distance, what is the design of the windows and the walls in that house can be well understood ? And would any of the residents of that house think of something other than Dosuglata on my desk ? If there is no point in the sun and the earth to find out the gravitational force then there is no objection. With the fact that Newton's formula is straightforward, this problem will be resolved very well. ( Obviously , if the sun holds perfectly round , then it can be shown with symmetry or symmetry that calculating its impact on the Earth can be considered as a point in the center of its center. )
## <center>Round chicken at zero</center>
It is very important that I understand the meaning of 'good' solution , it is very important to read science. When scientists try to explain any event , the first of them is the easiest one to find out which model or image of the event is fairly or approximately can be understood. Take the example of the sun and the earth. If you want to find out how much time the earth takes around the Sun ,So first of all we can think that no one else is implementing the sun except the sun on the earth. In other words, there is no moon in our imagination, there is no other planet or stars. On top of that, we will take the sun and the earth to the point (or completely round). Then the gravitational force between them can be easily calculated and how much the world is moving around. Knowing how much time it takes to rotate around the sun will be found.
>In the first place, scientists try to explain an event to find the simplest one model, which can be understood roughly.
When I made an easy picture that was calculated , now let me ask , how accurate this is. The answer is , it is fairly accurate. Now whether we will run with this 'rough' answer depends on what we want to do. There are some days in a year , or how many minutes , it is to take account of this 'fairly', the answer will be. But if we compare the speed of the Earth with a clock that can measure a very delicate time , then it will be seen that a little bit of difficulty is happening. Why is that ? Because ,Our image was very easy to calculate the ball on the earth. There in the reckoning of the moon on the earth. If you want a little more subtle then we can count them on the earth, the sun and the moon - I see the impact. Readers can read about 'Leap seconds' to know more about them.
Approximation or asceticism is the only way to understand nature.
Ascension also needs to answer the very simple question. For example, how long will it take to get the belt in the belt? If you know the distance of the head from the bell, it will be very easy to get the speed and speed. But, now it will come to mind - Bell did not fall into the vacant place! The obstacle in the air, which had fallen asleep in Beltallah due to the sultry breeze, was also to be considered as. On the other hand, the earth is moving around and moving around, an extra force will work on the bell (Coriolis ball) for its rotation - its effect must be caught! Etc. etc. Professor Nidiram Sardar will also eat wheezing if everything is done with money. And so we need to eliminate the effects of the sensation - the barrier of the air, the Coriolis ball, etc. in this example. It is not bad to get the answer. Then gradually add other effects and see how big it is.
>Approximation or asceticism is the only way to understand nature.
This is an example of the answer that we know, as well as good cameras here and stopwatch can tell how long it takes to read the belt. Asnayana Prahman became important even in the case where the answer is not known. And the question of our survival and death depends on many things on the answer. It is very important to know when the storm will come on the coast. However, this weather forecast is very complex problem. Only satellite information is not enough, it is necessary to use that information to predict good models. It should also be understood here that climate change can change for thousands, which are more important, which are relatively few. Again, it is necessary to know weather forecasts for a few days, as well as to understand exactly where the average temperature of some place will stand up to fifty years after one hundred years. Here is the average temperature change (growth) of the Earth 3 One of the many reasons to find out the main reasons.
A lot of funny stories (joke) on sannyasanan are very popular in the world. For example, once a physicist was trying to understand why his poultry chicken was dull. At first he made an approximation - the chicken is a round spherical, and in the pure spaces (spherical chicken in a perfect vacuum)!
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## <center>What is the way of the moon?</center>
How much information is given in science text books. What is the distance from the Sun as the Earth , the electron charge or how much charge ( Ray 'Middleman', the film Interview - to remember the scene , where the mass of the moon with how many questions that were asked ?) . The questions arise from these examinations , and memorizing them, science becomes boring to the students. In the present age, the importance of learning to read information or definitions from the book has decreased . Because , if needed , there is a computer at hand , the phone has internet. The mass of the sun or the electron ,The definition of gravitational constant or proton , or the definition of plurality, can be ejected in a few seconds.
Let's think a little differently. Rather, we started asking questions about these sources of information. For example , who said the distance from Earth to the distance of fifteen million kilometers ? What is the distance to measure this ? If I want to know what they are standing at the roof of the house , how far should I measure them ? Again , how big is an electron, how big ? Once you start asking questions, but the team will come and ask questions.
From the discussion of these questions but how many new sciences will come out One - the question can be applied mass. We bought the brinjal or rice from the market, and we used to calculate the mass of its speed. We understand its policy. But in the corner of the sky, how can the mass of the star that flames ? On the other hand momentarily on the other side of the universe from citizens that are running Particle neutrinos , those or how to mass Measure? Take care of one thing. These are the questions I made , but they are very easy to hear. Most of the time new topic of research comes out from simple questions like this.
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#### Reference and Extras: -
1. Various models of carbon can be made, with a small ball of stainless steel and thermoplastic balls. Carbon atoms may think the balls. These can be given different shapes by adding them with a stick. A similar video can be found <a href="https://www.youtube.com/watch?v=mwJmi6ByF5M">here</a> . This video uses 3D printed disc instead of thermokl.
2. <a href="https://www.youtube.com/watch?v=vYkyUqUa6vU">A video</a> on carbon pellets .
3. Earth's average temperature is rising (global warming). See the details of <a href="https://en.wikipedia.org/wiki/Global_warming">Wikipedia</a> and its references here for details.
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