This paper aims to analyze how child restraint systems (CRS) in cars should be positioned to protect children at the ages 1 to 5. The study is preformed in co-operation with the Swedish insurance company Folksam. Data from Folksam´s database on car crashes in the years 1999-2004 is being used in this study. Every child in the ages 1 to 5 was searched for in the database, which resulted in 184 observations. To perform the analysis, categorical data analysis is suitable.

This qualitative study aims to investigate some secondary school teacers' attitudes to and experiences of motivation in their second language classrooms. Through qualitative interviews with five teachers some different perspectives on motivation and its function in second language acquisition have come to light. First, motivation is seen as something important and some teachers tend to distinguish between intrinsic and extrinsic motivation. Those who do so tend to value intrinsic motivation more highly. Secondly, teachers believe they can affect students' levels of motivation.

There has been an increasing interest for ranking of Swedish health care and a lot of emphasis has been placed on the creation of indicators in order to rank hospital units. However, essays on to what extent the choice of statistical method affects the final result of the ranking of health care units have not been given the same attention. For this particular reason, the main objective of this essay has been to investigate whether the choice of statistical model has a significant impact or not on the final result, by using five different, more or less common, statistical approaches: bar charts (with and without confidence intervals), control charts, logistic regression, multi-level analysis using shrunken residuals. The analyzed material in the essay comprises 24119 patients that all have been prescribed some form of the lipid-reducing medicine statin. According to directives given by Region Skåne, doctors are encouraged to prescribe a particular type of statin medicine, namely Simvastatin, which has been proved to be equally effective, but significantly cheaper than other statin medicines.

We have, after three years of studying at Södertörns University Collage, experienced that there is great division in the classroom between students of foreign origin and ethnically Swedish students. How the students choose to place themselves in the classroom form a pattern on the basis of students? outer shells. The aim of this study is to understand what impact the student?s social orders has on the position they choose in the classroom.

The aim of my study is to investigate how last year students in upper secondary schoolunderstand certain mathematical concepts, in particular the unit circle and its trigonometry.I have used intentional analysis to interpret student?s actions when they solve certain tasks onthe basis of a cognitive, situated and cultural context.Interviews with four university teachers in mathematics about the unit circle, trigonometry,and mathematical understanding, serve both as background for the study and as basis for adiscussion, where I relate students understanding to what the teachers want new students toknow about these concepts when they begin university studies in mathematics.The students were arranged in three groups with three students in each group. Each group waspresented with two tasks, one in which they were asked to calculate the cosine values for onepointed, one blunt and one straight angle, each located in a separate triangle. They were alsoasked to decide whether the points (0,71; 0,71) and d (1 2 , 3 2 ) are located on the unit circleor not.My conclusion is that students mainly have an operational conception of the unit circle andtrigonometry. The lack of structural conceptions result in difficulties in seeing connectionsbetween the concepts in unfamiliar situations.

SAMMANFATTNINGDenna uppsats handlar om undervisningen i en mångkulturell och mångspråkig klass i den svenska gymnasieskolan. De didaktiska val som gjorts i undervisningen under ett par månader under höstterminen 2005 redogörs för och motiveras. De didaktiska valen analyseras mot bakgrund av ett kunskapsbegrepp inspirerat av kognitionsforskning. Vidare belyses valen från sociolingvistisk synpunkt och slutligen också ur en andraspråklig synvinkel.Syftet är att belysa de konsekvenser det mångspråkiga och mångkulturella samhället har för skolans praktik och då specifikt för svenskdidaktiken.Resultatet av undersökningen och analysen är att undervisningen påverkas av de mångspråkiga och mångkulturella särdragen. Dock kan stora delar av de didaktiska val som fungerar i denna grupp också tänkas kunna fungera i en traditionell modersmålssvensk undervisning.

The aim of my study is to investigate how last year students in upper secondary schoolunderstand certain mathematical concepts, in particular the unit circle and its trigonometry.I have used intentional analysis to interpret student?s actions when they solve certain tasks onthe basis of a cognitive, situated and cultural context.Interviews with four university teachers in mathematics about the unit circle, trigonometry,and mathematical understanding, serve both as background for the study and as basis for adiscussion, where I relate students understanding to what the teachers want new students toknow about these concepts when they begin university studies in mathematics.The students were arranged in three groups with three students in each group. Each group waspresented with two tasks, one in which they were asked to calculate the cosine values for onepointed, one blunt and one straight angle, each located in a separate triangle. They were alsoasked to decide whether the points (0,71; 0,71) and d (1 2 , 3 2 ) are located on the unit circleor not.My conclusion is that students mainly have an operational conception of the unit circle andtrigonometry. The lack of structural conceptions result in difficulties in seeing connectionsbetween the concepts in unfamiliar situations.

The aim of my study is to investigate how last year students in upper secondary schoolunderstand certain mathematical concepts, in particular the unit circle and its trigonometry.I have used intentional analysis to interpret student?s actions when they solve certain tasks onthe basis of a cognitive, situated and cultural context.Interviews with four university teachers in mathematics about the unit circle, trigonometry,and mathematical understanding, serve both as background for the study and as basis for adiscussion, where I relate students understanding to what the teachers want new students toknow about these concepts when they begin university studies in mathematics.The students were arranged in three groups with three students in each group. Each group waspresented with two tasks, one in which they were asked to calculate the cosine values for onepointed, one blunt and one straight angle, each located in a separate triangle. They were alsoasked to decide whether the points (0,71; 0,71) and d (1 2 , 3 2 ) are located on the unit circleor not.My conclusion is that students mainly have an operational conception of the unit circle andtrigonometry. The lack of structural conceptions result in difficulties in seeing connectionsbetween the concepts in unfamiliar situations.

The aim of my study is to investigate how last year students in upper secondary schoolunderstand certain mathematical concepts, in particular the unit circle and its trigonometry.I have used intentional analysis to interpret student?s actions when they solve certain tasks onthe basis of a cognitive, situated and cultural context.Interviews with four university teachers in mathematics about the unit circle, trigonometry,and mathematical understanding, serve both as background for the study and as basis for adiscussion, where I relate students understanding to what the teachers want new students toknow about these concepts when they begin university studies in mathematics.The students were arranged in three groups with three students in each group. Each group waspresented with two tasks, one in which they were asked to calculate the cosine values for onepointed, one blunt and one straight angle, each located in a separate triangle. They were alsoasked to decide whether the points (0,71; 0,71) and d (1 2 , 3 2 ) are located on the unit circleor not.My conclusion is that students mainly have an operational conception of the unit circle andtrigonometry. The lack of structural conceptions result in difficulties in seeing connectionsbetween the concepts in unfamiliar situations.

Students? performance in school is dependent on the indoor climate. This report studies four schools regarding air quality and thermal environment. A survey was made at the schools as well as measurements of carbon dioxide, dampness, thermal climate and, as an indicator for the furniture?s capability to collect dust, shelf factor and fleece factor.

Recent research in classrooms has often had its focus on the pupil, the individual, and not on the different groups of students that exist. In a classroom there are normally several different groupings, each one having its own personal attitude towards the current lesson. If there had been more research we would find it easier to understand why pupils sometimes behave the way they do.The purpose of this essay is to analyze how pupils` social relations create groupings. Furthermore I intend to investigate how and why pupils show their belonging to a certain group.The two questions of the essay are:1. How pupils? social relations appear in a classroom?2.

This paper is about basic set theory and cardinalities for infinite sets. One of the results are that the line R and the plane R2 contains exactly the same number of points. Because of that the set theory is described with a formal language this the paper has an appendix about formal languages..

The purpose of this study is to investigate how teachers approach communication in their mathematics instruction. The communication involves concepts such as teachers' mathematical language, incorrect answers, and various interaction patterns. In line with this, the study also examines how these types of communication may affect students in the classroom. Furthermore, observations and interviews were conducted with five different teachers in Sweden using an observation scheme and an interview guide. The results reveal that four out of the five teachers use both child-directed and adult-directed language when addressing students at different levels of mathematical understanding.

Syftet med föreliggande studie är att, genom intervjuer med tolv elever ur år fem, undersöka deras uppfattningar om matematik. För att studera detta har vi använt oss av en kvalitativ metod med inspiration av den fenomenografiska ansatsen. Utifrån studiens syfte och frågeställningar har tre temaområden framtagits inom vilka elevernas uppfattningar analyserats och därefter kategoriserats. Ur resultatet framkommer en relativt snäv syn på matematiken där läroboken är dominerande i elevernas uppfattningar. Boken fungerar som utgångspunkt både i definitionen av matematikämnet och vid beskrivningen av hur ämnet upplevs.

The main problem that is seen in schools is that teachers sometimes don not reflect on what kind of pupils they have in the class and therefore do not adapt their way of communicate, which can lead to confusion and misunderstandings from the pupils side.In this essay I have study a teacher?s way to communicate with her pupils depending of what kind of class she has. The main question is How the dialogue between teacher and pupils looks like, and after that there are two more questions that are answered.The method in this essay is of a qualitative form where the observation is the main method to gather the empiric parts. The analysis is also of a qualitative form.The theoretical frame is taken from different scholars but the main focus lies in the subject of communication and dialogue and how these subjects are depending on the relationships  between people. But there are also a theory from Bahktin were he points out how to succeed with a dialogue in a classroom.The conclusion in this essay is that communication and dialogue in the classrooms are important regardless what kind of pupils you as a teacher have.