Gravitational lenses are unlike ordinary optical lenses, a phenomenon corrupting our optical view of the cosmos. When we look out intospace we see celestial bodies lying with astronomical distance from Earth. There is no guarantee that what we see out there in space is actually there where we are observing it, and it may be that we see multiple images of the same star! Studies have shown that thenumber of distorted images of an n-mass (n > 1) plane lens can not exceed 5(n -1) for lighter lenses or 5n for more massive lens. This mathematical thesis covers gravitational lensing and their properties that distort light rays coming towards us from distant celestial bodies. In addition of gravitational lensing, its properties and the proof of the maximum number of distorted images, a bigger part of this work even cover two very interesting mathematical tools - the so-called Schwarz function and Bezout theorem..

This study investigates the teaching strategies of four teachers, and determines which teaching strategies give better results in mathematics at the middle school level? Result here means the knowledge level of the students. The result has been measured through leave out a mathematical test, which I leave out designed. Teaching strategies have been assessed through interviews with teachers and observations of their lessons.My study shows that to go through the lessons thoroughly in the traditional way, and open discussions with the whole class are best for students achievements.The information available, however, is too limited to draw some general conclusions, but my study can be seen more like a counter-example to the general praxis that is short lectures and individual assessment with one to one communication when teaching mathematics..

This report documents the process of designing a laboratory exercise in Fourier analysis at Vetenskapens Hus (House of Science) in Stockholm. The lab is designed for high school students studying science or technical education. It focuses on the physicalunderstanding and mathematical description of sound, in particular music. A model of such a lab is presented in this work; containing a review of the mathematical theory, summary of educational research in the field, descriptions of the design process and of the investigativework that led to the final result. The designed material for the lab includes developed computer programs, visit leader tutorial and description for teachers. .

Abstract The purpose of this study was to examine how teachers in regular classrooms include pupils with special educational needs. I also wanted to find out what support teachers get of special education teachers, and the teaching perspective the teachers have when they work whit pupils. The teachers that have been interviewed and observed in this study work in regular classes. This report is a qualitative study based on interviews and observations whit four teachers. The results indicate that the teachers are conscious of how they teach and their teaching strategies. The teachers agree that all students should be included in regular education, because learning occurs in the interaction between individuals.

What is creativity? Why is it important? How can you stimulate pupils to becomemore creative? These are some of the questions that are studied in this thesis.The discussion is focused on programming as the medium of creativity and theresult is a setup for a course book that teaches programming at the same time asit makes the reader more creative. The results are based on literature study aswell as observations and interviews with teachers and pupils from three differentschools in Stockholm, Sweden. The study shows that gets more important everyday as more and more jobs are replaced by computers and we live in an age ofabundance. The teachers would like the pupils to be more creative but don?tknow how achieve that at the same time as they have to teach them everythingthat they are supposed to know when the course ends..

This report describes a study of how the teachers in Sweden are working with the dialog in their classrooms. The aim was to find out how the teachers are using the dialog in their teaching. And if they think that the dialog has a meaning for the pupils learning, and how they think the pupils learn. Even the difficulties whit the use of dialog in the classrooms and which in the classroom should speak the most was examined. The methods that I used in this qualitative report were interviews and observations of four teachers in the primary school.The research questions in this report were:Which meaning do the teachers think that dialog affects the pupils learning?How does the teachers work whit dialog in their classrooms?Who is leading the dialog in the classroom?Which are the difficulties when working with dialog in the classrooms?I found out that the teachers view on knowledge belonged together with how they worked with the dialog.

Swedish municipals schools have been given an assignment to convey basic values to pupils. The assignment is to bring up the pupils through transmitting and developing a heritage such as values, traditions, language and knowledge. Together along with the lasting knowledge which constitutes the community frame of reference everybody needs. There by is the purpose of this study through a qualitative method to investigate how the schools assignment to create a community national identity of the pupils is interpreted by the teachers in introduction classes. Even how the teachers in this study response to ?Swedish? culture by presenting and educate the pupils in this.

The main purpose of this study was to examine, and illustrate, highschool social workers experiences of pupils with self-injurious behaviour. Self-injurious behaviour in this study refer to individuals who harm them-selves, with physical injury as consequence, without purpose to commit suicide. A qualitativ method was used and five highschool social workers, in the south of Sweden, were interviewed.The main questions were:- What kind of experiences have highschool welfare officers of pupils with self-injurious behaviour?- What view, and personal opinion have the welfare officers at the problem, and how do this affect them in their work with these pupils.The school social workers experiences of pupils with self- injurious behaviour, were for instance that the pupils often feel ashemed over their behaviour and that they often have lowe self-esteem. The social workers seemed to imagine the behaviour as a copingstrategy.It turned out that the social workers personality and their personal opinion regarding self-injurious behaviour, were of great importance in their work with these pupils..

The central part in all public health work is health promotion and disease preventing actions among the population. Since all public health work includes the whole population, the work has to embrace disabled people as well. Within the disability policies, participation and equality are important goals, which illustrate the importance of a job. In previous studies the positive effects of animal have been detected among persons with disabilities, by better balance, better mobility, larger social network, new knowledge and most of all happiness. The aim of this study was to investigate how people with disabilities experience their health when they are working with animal husbandry at daily activities.

The purpose of this study has been to investigate how individuals with reading- and writing disabilities and dyslexia handle their information need in the workplace. The method that has been used is a qualitative study made with interviews with individuals who have these problems, to see how they think and feel about the flow of information on their everyday basis. The study?s respondents are working women between the ages of 27 and 47 years old and they have reading- and writing disabilities and dyslexia. The most interesting results of this study are that the respondents are avoiding jobs where they need to read and write much and where they also do not like changes in their job situation.

This study investigates a Swedish educational project aimed to incorporate young people with intellectual disabilities into the labor market through internship. This qualitative interview study was conducted with six of the project student?s internship supervisors. The purpose of this study is thus to examine the motives behind the decision to take on a trainee from the program at the workplace. In addition, the study also aims to examine whether and how dif-ferent factors of the workplace affect the trainee?s opportunities for social inclusion in the workplace.

One of our big public health problems in Sweden is that human beings are too inactive in outdoor settings. That is why stress related diseases increase and influence humans both mentally and physical. The physical activity is halved among many children when they start school and the older they become the less they enjoy school. It is also an increasing problem that children and youth in today's society have lack of worthwhile experiences in the nature. The aim of this study was therefore to examine how the experience of outdoor environment had importance for health and learning on upper secondary school pupils.

The purpose of this study was to investigate how pupils with social dysfunction were defined and described and how the responsibility of the school concerning the needs of these pupils was apprehended. For this matter, in depth interviews with four headmasters and four teachers at three different schools were carried out.The possibilities to help pupils with social dysfunction were regarded as limited due to limited resources. The school can be described, as a huge refined apparatus of classification where some children very early are eliminated and there does not appear to exist any back up plan for these individuals. In this respect the function of the school is very similar to that of yesterdays school where the elimination process worked just as well, the denotations change but the problems remain the same.The material used in this study is too small to make general conclusions but the results give some indication of the problems of the interaction between the school and its staff and pupils with social dysfunction. We strongly believe that the results warrants further investigation as to in what way the school can improve in helping pupils with social dysfunction..

The main purpose of this study was to examine the knowledge in biology by immigrant pupils. My investigation is based on the pupil and I have focused on positive and negative factors that affect their performance in biology.The study is based on marks in year 2006/2007, a survey and interviews made with four immigrant pupils at a compulsory school in Västra Götaland.The study indicates that the result in biology of immigrant pupils is lower compared to Swedish.Difficulties in language, the commitments by their parents and their surroundings are the main factors that affect their results negative..

The aim of the study is to investigate how teachers in grades 1­­­­­­­­­­­?3 use reading aloud to develop the pupils? reading comprehension and how they reflect on the method. The study is based on interviews with four teachers, all of them working in these grades. The interviews have been interpreted hermeneutically and the statements compiled in accordance with the aim and research questions. The results indicate that all the teachers are aware that reading aloud can be used as a resource to develop pupils? reading comprehension.