Mathematical models possible to simulate are of great importance in order to make successful projects in the aircraft manufacturing industry. An aircraft fuel system is very complex, containing pipes, tanks, orifices, valves and pumps. The principal of this thesis is using the tool Easy5, which no longer is considered reliable enough in terms of development and support. This thesis tries to evaluate the Modelica language as a possible alternative to Easy5. To make this evaluation, the components concerned in the fuel library in Easy5 are implemented to the Modelica language.

According to some researchers, dyscalculia is at least as prevalent as dyslexia. Somewhere between 3.6-6 % of all pupils have specific mathematics difficulties named dyslexia. If this be true, it should present the most complex special education predicament by far in schools today. Despite the statistics, dyscalculia is still a rather unknown concept.The cause of dyscalculia is not yet fully analyzed. There are several theories and many researchers see similarities between dyscalculia and the special educational problem of reading and writing, dyslexia.

Syftet med denna undersökning har varit att studera gymnasieelevers förståelse för funktionsbegreppet.Den teoretiska utgångspunkten har varit att studera elevernas förmåga att växla mellanolika representationsformer och studera deras förståelse för relationen mellan de olika representationerna.Elevernas förmåga att resonera har också varit en väsentlig del och därför har forskningenkring matematiskt resonemang också varit en viktig del i arbetet. För att nå ett resultat har treklasser på gymnasiet fått skriva ett test konstruerat för att svara mot uppsatsens syfte. Utövertestet intervjuades tre av eleverna för att det skulle finnas möjlighet att fånga elevernas förmågaatt resonera. Resultatet kom att visa att vissa elever har svårt att utföra växlingar mellan vissaolika representationer, men mellan andra är det betydligt enklare. Det framkom att eleverna varskolade i ett algoritmiskt tänkande, och att eleverna hade svårt att resonera fritt och kreativt kringfunktionsbegreppet, samt att eleverna hade svårt att skilja de närliggande begreppen ekvation ochfunktion..

Syftet med arbetet var att undersöka hur elever i skolår fyra interagerar och kommunicerar under problemlösning kring en öppen fråga i grupp, genom att uppmärksamma och göra en granskning av innehållet i kommunikationen. I arbetet användes ostrukturerad observation som metod. Dessutom användes enkät för att ta del av elevernas attityder till grupparbetet. Resultatet visade att 99 %, 637 av totalt 643 kommentarer, av kommunikationen handlade om själva uppgiften. Vidare visade resultatet även på vilka sätt eleverna bidrog till att lösa problemet.

Internal communication exists in all organizations and is ongoing. It is of great importanceto communicate effectively when deficiencies can have serious consequences. The tsunamithat swept over South East Asia's coast in 2004 is indicative of this. At that time the consequenceswere loss of efficiency and productivity of businesses, health care, police and themilitary. All because of the lack of information.Employees in an organization take many decisions that affect the entire organization.

This master's thesis aims to explore the field of evaluative bibliometrics. In short, this field of research uses bibliometrics - i.e. the application of mathematical and statistical methods to books and other media of communication - as a research assessment tool. In recent years, evaluative bibliometrics has been an increasingly used method in research evaluation and is today used and implemented in many countries worldwide. Today, in Sweden, we can also see that evaluative bibliometrics is highly recognised and, in some cases, used in practice.

Vilka är problemen för elever med matematiksvårigheter? (What are the problems for students with mathematical difficulties)? Skolutveckling och ledarskap, Specialpedagogisk påbyggnadsutbildning, Lärarutbildningen, Malmö Högskola. Syftet med mitt examensarbete är att undersöka vad elever med matematiksvårigheter tycker är svårt i matematik samt hur de tycker en bra undervisning i ämnet skall se ut. Jag tittar även på vilka arbetssätt och undervisningsmetoder deras lärare/speciallärare använder sig av. I mitt arbete har jag gjort både en enkätundersökning bland elever i år åtta samt intervjuer av lärare. Med hjälp av kvalitativa intervjuer av skolans matematiklärare/speciallärare har jag tagit reda på hur de planerar och genomför sin undervisning. Resultaten av min undersökning pekar på, att det råder en samsyn bland skolans lärare och speciallärare hur lektioner skall planeras och genomföras för att nå bästa resultat. Men de saknar tid och fortbildning för att klara av en mer varierad undervisning där den muntliga kommunikationen är viktig.

Based on earlier experiences of mathematics and mathematical learning, both as a student and as a teacher, I became more and more interested in how well the publicly accepted opinions about mathematics as an uninteresting, difficult and ?geeky? subject corresponded to reality. What do Swedish pupils really think about mathematics and is it possible to identify any differences in their attitudes based on the pupils? age?From this point of view the following questions were formulated:·What are pupils? attitudes towards mathematics in grades 3, 6 and 9 and how do they conceive their learning conditions?·Is it possible to detect any differences in the attitudes and preferences depending on the pupils? age?The result of this study compares well with previous studies done in this and overlapping fields and indicates that:·Younger pupils tend to have a better liking of mathematics but with increasing age that interest fades out.·Most pupils, without regard to age, consider mathematics to be one of the most important subjects, despite the fact that many pupils also find mathematics difficult and boring.·For pupils of all ages, the teacher is the most important factor in the learning process. Older students have more specific demands on the teacher for knowledge and pedagogical skills.·A high noise level, talking and disturbances in the classroom are the most bothering elements when it comes to learning mathematics.

This paper presents the results of a study of dyscalculia. It is a retrospective archival study implemented with a deductive approach. On the basis of established research and theory 18 analytical categories were formulated, before a deductive thematic analysis of empirical material, consisting of journal data of 17 students investigated for dyscalculia, 14 girls (82.4%) and 3 boys (17.6%).The purpose of this study was to investigate the relationship between the concepts formulated in research on dyscalculia and actual mathematical difficulties as those found in practice of students at school.All pupils had early and long-term difficulties with mathematics, while not showing any difficulties in other subjects. Most have had an unsatisfactory learning environment. All had normal intelligence but difficulty with certain cognitive, self-regulatory and linguistic features.

Most of my 16 students show a negative attitude towards mathematics and have difficulty understanding why they need mathematics to work as cooks. Their lack of knowledge has a negative effect on their work in the kitchen because they cannot master relatively simple mathematical solutions. The purpose of this study is to examine if an integrated working method of the subjects mathematics and cooking can change students? attitude towards mathematics and increase their understanding of the value of it in restaurant work. An integrated working method means to integrate the core subjects with programme specific subjects and that teaching is directed towards the main features of the vocational programme in order to create a holistic view.A theory of action research has been applied in this study, aiming to change something perceived as problematic through combining theory and practice in the cooking subject.

 ABSTRACTThis master thesis defines a new concept ? Math Videos on the Net. The term refers to short,educational videos of mathematics that are freely available on the internet. The videos aredesigned to offer a complement to other course material for a specific element of a specific mathcourse and are directed to the target group of students studying the latter. Within this work, MathVideos on the Net have been created for the Swedish upper secondary school courses Matematik1b and 1c.The study aims to describe, analyze and interpret whether, and if so, how Math Videos on theNet can help support the work of teachers and students? development of knowledge in the firstmathematics course of the Swedish upper secondary school.

The purpose of this essay is to examine when teachers choose to discuss mathematics withstudents rather then just talk about mathematics. A definition where used to distinguish betweenan interaction that is not a discussion and an interaction that is a discussion. This definition hasbeen created by drawing ideas from other works into making a quite simple definition whichtherefore is easy to observe. The discussions are also separated into two different kinds ofdiscussions. The first and most common category of discussion are one where only imitativereasoning is used.

Hälsans Trädgård is a project which is going to start in Gamla Linköping, Sweden. The authors were commissioned by Arbetslivsresurs, a company working with work rehabilitation, to select, define and make job analyses on five work tasks at Hälsans Trädgård in Gamla Linköping. A job analysis means an analysis of the demands the job make of the individual. The job analysis used in this study is called The Revised Handbook for Analyzing Jobs (RHAJ) and is from the US Department of Labor (DOL). As RHAJ is an American instrument, the authors produced a form where the concepts are translated into Swedish to make the analysis easier.

Most of my 16 students show a negative attitude towards mathematics and have difficulty understanding why they need mathematics to work as cooks. Their lack of knowledge has a negative effect on their work in the kitchen because they cannot master relatively simple mathematical solutions. The purpose of this study is to examine if an integrated working method of the subjects mathematics and cooking can change students? attitude towards mathematics and increase their understanding of the value of it in restaurant work. An integrated working method means to integrate the core subjects with programme specific subjects and that teaching is directed towards the main features of the vocational programme in order to create a holistic view.A theory of action research has been applied in this study, aiming to change something perceived as problematic through combining theory and practice in the cooking subject.

In a world where digital media is becoming a greater part of people?s everyday and working lives it is plausible to assume that the upcoming generation of pupils expect the teaching media to adapt thereafter. It is this assumption of an increased demand that Natur & Kultur is hoping to be able to meet. This thesis has been a stage in the process of producing digital material in the subject of mathematics for high school students. Specifically the aims of this thesis have been to make a rough description of the largest competitive companies? products within the same market, explore and put together a brief theoretical foundation of contemporary research and produce concrete examples of ideas for digital applications.