The purpose of the study is to examine how teachers and students believe that graphing Calculators affect the teaching of high school mathematics courses. By becoming aware of this, teachers and teacher students have the opportunity to reflect on the use of graphing Calculators in their teaching. The empirical base consists of interviews with teachers and a survey among students at two high schools in southern Sweden. The results show that teachers especially consider the graphing calculator as a tool, much like paper and pencil. They use it if and when it is deemed able to contribute in a significant way in their teaching, either to save time and/or to help deepen the understanding of various mathematical concepts and methods.

Due to the obvious fact that one can never be hundred percent sure of what's hiddenunder the ground surface, construction work is naturally hard to project.However, many of the work methods are executed in the same way on variousprojects. The department of construction work at JM AB region öst describes a lackof follow-ups and feedback between the Calculators and production managers.In this thesis we have studied the communication between these groups and alsohow they share experiences and knowledge. In order to get the full pictureof the day-to-day operations we used three methods to gather information. Studyingliterature gave basic knowledge of theories about feedback, and thenecessity of working with giving feedback. In order to understand the process ofconstruction work we made several interviews, both structured and nstructured.

Arbetets syfte var att undersöka hur lärare använder miniräknaren i sin undervisning men även hur eleverna använder den och om det finns några skillnader i attityder och användning mellan elever och lärare. Undersökningen gick också ut på att se om användandet har ökat eller minskat i gymnasieskolan. Arbetet syftade också till att undersöka om det finns några skillnader mellan tjejer och killars attityder till miniräknaren och tjejer och killars användning av den. En lärarenkät och en elevenkät delades ut på fem olika skolor och dessa låg till grund för undersökningen. Resultatet pekar på en ökad användning, en mer positiv attityd till miniräknaren hos gymnasielärarna och att alla lärare, i någon form, tar hänsyn till miniräknaren vid prov.