SIXTH  WEEK OF SCHOOL INTERNSHIP  PHASE 2: 10/12/18

Since Christmas  exam starts on 11/12/18 we were going back to college. On 10/12/18 I was leave due to some personal  reasons. 

FIFTH WEEK OF SCHOOL INTERNSHIP PHASE 2: 3/12/2018 to 7/12/2018

The fifth week of school internship started on December  3 and ended on December  7. The topics that I completed  during this week are Magnification,  vision disorders,  focus and focal length,  compounds of carbon and organic compounds. In total there were five topics of which 2 is from chemistry and 3 from physics. The class went as usual through the whole week, there were no special programs conducted.  The school time was from 9.30am to 3.30 pm and on Friday from 9.30 am to 4 pm. 

FOURTH WEEK OF SCHOOL INTERNSHIP PHASE 2: 26/11/18 to 30/11/18.

The fourth week of school internship started from 26th of November and ended on 30th of Nov. There were a total of 5 days classes and a morning assembly  was conducted on Wednesday,  the 28th of November. The topics that I completed  during this week are production  of nitric acid, image formation by lens,  newcartesiam sign convertion, power of accommodation. Out of these one is from Chemistry and 3 from physics. Our optional teacher Miss Chinmayi came for our class observation on 29th of nov,  where I took a class on the topic power of accommodation during the 3rd period in 9C. After the class she gave her opinion about my class. There was peer observation of Keerthy Raj from maths option. The classes ended as usual at 3.30 with the National Anthem.

THIRD WEEK OF SCHOOL INTERNSHIP PHASE 2: 19/11/18 to 24/11/18.

The third week of school internship  started from  19/11/18  and ended on 24/11/18.  The 20th of Nov was declared  as a public holiday of Islamic prophet Muhammed.  But this day's class was compensated on Saturday with Tuesday's time table, so we had a total of 5 days class in this week.  The topics that I completed during this week are, salts,  refractive index,  sulfuric  acid,  critical angle and total internal  refraction, optic centre, centre of curvature, principal  axis, principal focus.  Of these,  2 are from chemistry and 3 from physics. Later I had peer  observation  of 5 teacher trainees in this week.  Sonisha Solomon from Maths option, Sranya D from Malayalam option,  Aayisha and Keerthy from English option and Rincy from Social Science  option. The classes ended at 3.30 pm with the National Anthem.

Second week of school internship phase 2:

12/11/18   to   16/11/18

The second week of school internship started on 12/11/18 and ended on 16/11/18.

I had a total of five classes in 9C during the whole week and the topics that I took are refraction, incident ray refracted ray, monobasic  acid, optical density,  neutralisation  reaction. Of these three are from physics and two from Chemistry. The topic  mono basic acids were taught using concept attainment model.Later I had peer observation  of four teacher trainees during the second week, the trainees were Aneena A and Divya G  from physical Science  option, Maheshwaran Vinod and Haseena Habeeb from social science  option.  On November 14th, children's day was Celebrated  in our school, where the assembly was conducted  by we, the teacher  trainees and sweets were distributed after assembly. On  the same day prizes were distributed by the principal to the students  who won in the sports  meet and it was the first assembly conducted  after the internship  program started.

SCHOOL INTERNSHIP:PHASE II

As part of the B-Ed curriculum the second phase of  school internship started on 7th November. The school allotted to me was SN Trust Higher  secondary  school Kollam. There were three of us from physical science option and were asked to meet our concerned teachers for physics and chemistry. It was Miss Rekha for physics and Miss Bindhu for Chemistry. We took the portions and time table alloted to us and I was asked to take physics and chemistry  for 9th standard malayalam medium class.

First week:07.11.18 to 09.11.18

The first day of our week was a holiday since it was Shankers day and it is leave for SN Trust schools. From the very  next day I started taking class as I was familiar with the students of 9C during the last phase. After giving a small introduction about the topic I started my classes and the topics that I took during the first week are acid and alkali. There were no other specialty or assembly conducted during the two days and as usual I reached the school by 9.15 am and classes ended at 3.30 pm on Thursday and at 4.00pm on Friday. 

E CONTENT

POLLUTANTS  FROM  AGRICULTURE

POLLUTION DUE TO USAGE OF FERTILIZERS

ANALYSING:

                                                

Fertilizers are defined as materials which, if added to the soil results    in a better growth of crops. Continuous agricultural activity tends to decrease the soil fertility. Therefore, after each harvest chemical fertilizers must be applied. However, the increasing application of fertilizers has threatened  the human environment and ecology with deleterious consequences. Here  we are going to deal to know more about fertilizers, how they affect environment, their causes and effects. It is one of the major factors in agricultural pollution and therefore they have to be deal with serious concern.

                                                         

·         Fertilizers are chemicals or natural substance added to soil or land to increase

         Its fertility

·         Fertilizers cause many environmental and human hazards.

·         Soil pollution is one of the problem that caused by usage of chemical fertilizers.

·         Nitrogen fertilizers leads to stomach cancer and several other health disorders.

·         Eutrophication is caused by addition of phosphate and nitrate nutrients to lake.

·         Phosphates and nitrates are part of agricultural runoff from a land.

·         Slow release fertilizers use physical coatings on the fertilizer granules to control

                        Release of nutrients.

DESIGNING:             

                                          

Relating to the topic, four images and a video are shown which relates to what are chemical fertilizers their causes and effects. Food crops, like any other plant, require fertile soil to grow. Therefore, after each harvest chemical fertilizers are added. It is Harmful to plants, environment and human beings. The four pictures depict various chemical fertilizers and the video gives an overall understanding on the topic.   

DEVELOPMENT:

                                                              

INTRODUCTION   

Increasing population growth and urbanization, especially in the developing world has compelled the nations to produce more food. Approximately 25% of the world’s crop yield is attributed to the use of chemical fertilizers. Therefore, not surprising that the demand for fertilizers are doubling every ten years. However,  the increasing application of fertilizers has also threatened the human environment  and ecology with deleterious consequences. If unchecked, these harmful effects shall negate, to quiet some extend, the benefits derived from increasing usage of fertilizers.Fertilizers are defined as materials which, if added to the soil nutrients removed by the crop. At least sixteen elements are needed for the growth of plants among these carbon, hydrogen and oxygen are abundantly available in the environment in the form of carbon dioxide and water. These are, therefore, easily restored after each harvest. The remainder are not easily replaced. The below given is the list of nutrients that are essential for plant growth:

Primary nutrients	Nitrogen, Phosphorus, Potassium
Secondary nutrients	Calcium, Magnesium, Sulphur
Micronutrients	Boron, Chlorine, Copper, Iron Manganese, Molybdenum, Zinc

                                                    

 CLASSIFICATION OF CHEMICAL FERTILIZERS   

           

NITROGEN BASED FERTILIZERS:

Nitrogen containing commercial fertilizers are seen in three types, nitrates, ammonium   salts and simple amides. Nitrates being highly soluble in water, are taken up directly by the plants through their roots. Ammonium salts too are soluble in water. Simple amides, such as urea are quickly hydrolysed to ammonium compounds and then nitrified by soil microbes.

PHOSPHOROUS BASED FERTILIZERS:

                                                  

Most manuring schemes aim to increase the solubility of residual phosphates in soil. Unfarmed soils contain negligible amounts of phosphorous. Plants take up phosphorus mainly as orthophosphates. However, orthophosphates are not highly soluble in water. That’s why we try to increase the solubility of residual phosphates in the soil.

                                                          

POTASSIUM BASED FERTILIZERS:

                                             

The potassium released from the sources is rendered easily available to the plants. Therefore, potassium fertilizers have to be added to the soil at regular intervals unless potassium is returned to the soil in the form of fertilizers, the yield of crops will be poor.   

                                           

FERTILIZERS – HARMFUL EFFECTS

                                               

Extensive use of fertilizers is detrimental to the living environment. Following are some of the major environmental problems associated with fertilizer usage.

SOIL

                                       

Highly acidic conditions in the soil tend to inhibit many common bacteria, as the Optimum for most species is neutrality. Soils tend to acquire acidity through repeated use of nitrogen-based fertilizers. As the acidity of the soil increases, bacterial population decreases. Fertilizers harm the soil yet other way. These tend to restore inorganic nutrients to soil, but do not replace the soil’s organic matter. The organic constituents of soil are important because their decay produces humus, which modifies the structure of soil to a level which is conducive.

VEGETATION

                                                 

When soil becomes acidic due to consistent use of fertilizers, a number of chemical and biological conditions set in which are harmful to many plants. Under acidic conditions, nutrient cations, such as calcium and magnesium are leached away from the soil.

HUMAN HEALTH

                                               

Nitrates enters the body of those who consume the meat or milk of the cattle that has grazed on high nitrate – content plants. It will lead to kidney stones in human. Also leads to blue baby syndrome and stomach cancer. Stomach cancer has been associated with concentration of nitrate in portable water. Fatal haemoglobin, which has a greater affinity for nitrite than normal haemoglobin, persists for a few months in the blood stream of a new born.

TESTING

     

The content was tested by a teacher expert in the subject. The way of expressing the topic, the language used, spelling mistakes, content errors, clarity of pictures and relevant video that were put up relating to the topic was checked and suggestions were given. The testing was also done on how much the content was applicable and understandable to the readers and how we can reduce the usage of chemical fertilizers.

IMPLEMENTATION

                                                         

Finally, the content was uploaded in a learning management system where the students can  easily get access to the knowledge they want and they can get a clear idea on the topic  that they want to learn. It was also implemented in SN Trust HSS Kollam among secondary school students to make them understand on the topic harmful effects of fertilizers, their causes and effects on the environment.

EVALUATION

           

The feedback from the learners and instructors are considers for further evaluation. The feedback from SN Trust school students were also collected for further improvements in the content.After checking the feedback, the content is re-designed for effective delivery of the topic.

INNOVATIVE WORK

SUMMARY OF SCHOOL INTERNSHIP-PHASE 1

As part of the 2017-2019 school internship program, the first phase started on 20.06.2018 (Wednesday). SN Trust HSS Kollam was the school allotted for me for the teaching practice. There were a total of 19 students from 6 optional subjects. From Physical Science there were 3 of us and we were asked to meet our respective teachers for the specified subject. For Physics, it was Miss Rekha and Miss Bindhu for chemistry. They gave us the time table and portions for the class allotted to us, and for me, I was asked to take Chemistry  for 9^th Standard and physics for 8^th  standard. I was asked to take three units from chemistry and three units from physics. On the first day itself, after the introduction session, I took class on physics. Various teaching learning aids were used for different classes and the use of ICT was preferred more for the better understanding of the students.

         

Special days celebrated on the school were yoga day (21.06.2018), anti-drug day (26.06.2018) and Independence Day (15.08.2018). Our concerned teacher, Miss Simi Aravind, came on 27.06.2018 for the class observation and gave us guidelines for the betterment of the class. The portions were completed on 13.08.2018 and on the same day diagnostic test was conducted in the class. On the next day, achievement test was conducted . The school internship program ended on 29.08.2018 after the Onam vacation. On the last day, we gave sweets to the teachers and thanked the Principal for accommodating us and giving us the required facilities for the teaching practice.

             

As part of the school internship program these are the values I acquired:

• ·       Integrity
• ·       Sense of hope for the students
• ·       Mutual respect and responsibility
• ·       Continuous self-learning