The purpose of this study, Trends in International Mathematicsand Science Study (TIMSS) mathematics achievement in Turkey on theresults of the other countries participating in the study overall successis to make a comparative analysis by comparing average. In thiscontext, the TIMSS 2011 study regarding the eighth-grade mathachievement based on the data obtained in Turkey goes to eighth gradestudents' math achievement and success factors affecting it werestudied. TIMSS also takes place prior to the year 2011, the results ofthese results with the results obtained were compared. The average ofthe countries participating in the TIMSS 2011 mathematicsachievement scores highest increase in Turkey among the countrieswith the highest increase of 20 percentage points score across countrieshas taken place. Turkey's TIMSS 1999, 2007 and 2011 applications,students' mathematics content knowledge achievement scorescompared to an increase in student achievement has occurred.Research results in mathematics achievement development levels ofcountries, science lessons allotted time, parental education level,computer and internet access, in learning math self-confidence,mathematics attitudes to such variables to be associated with showsthat.Purpose and significance: Nowadays developing math and science,life skills of individuals within the framework of formal and non-formaleducation starting from pre-school development it is necessary for life.These developments in compulsory education of math and sciencecourses has increased the role and importance. The scope of applicationof the TIMSS student achievement and characteristics, school climate,teacher qualifications at the national level to the size of the country willgather information about the social and educational structure. One ofthe targeted overall aim of TIMSS curriculum, implemented andemerging data regarding curriculum to offer. Today, the people of thedeveloping life skills in mathematics and science in the development offormal and non-formal education, starting from pre-school environmentattributed to individuals throughout their lives to education. Place inthe compulsory education of formal education in mathematics andscience at the developments in educational outcomes and have putforward again the importance of the scientific literacy of countrieswithin the area policy-makers in education, society has tended to takesteps to upgrade. Overall, the TIMSS 2011 affecting students' learningare numerous contextual factors. School type, school resources,teaching approaches, characters demographic characteristics ofÖğrencilerin Matematik Başarısının Uluslararası Fen ve Matematik … 35Turkish StudiesInternational Periodical For the Languages, Literature and History of Turkish or TurkicVolume 10/7 Spring 2015teachers, students tend to have strong support from the familytendency to student learning and achievement are some of them. TIMSSachievement to the finest detail to analyze the results, to see how thatplays a role in the development of mathematics and science education isvery important to understand the content within learning andachievements.Method: In Turkey, 259 primary school students in the eighthgrade level in the school 7286; 240 math and 240 science teachersparticipated in TIMSS 2011. In this study, obtained from the TIMSS2011 study 8th grade math achievement based on data relating to the8th grade students' mathematics achievement in Turkey and this wasinvestigated factors affecting success. The overall objective of the studyshowed how the distribution of students' mathematics achievement thatis intended to identify. In addition, the results were compared withprevious TIMSS applications. This purpose is to make a comparativeanalysis. Therefore, the study of this model is a descriptive study.Results: TIMSS 2011 application is an important application bothin terms of student achievement and to better understand studentachievement in mathematics and science, to compare with the previousyear and to compare it with other countries. The results of theeducation system to identify the current situation and basic educationin educational policies, curricula, teaching methods, teacherqualifications, offers courses tools and scientific information for therevision of elements such as material. Students' achievement inmathematics significantly compared to the previous application is agreat progress. Turkey's ranking in the international arena hasincreased, but below the international average in mathematicsachievement has taken place. In this tutorial can be considered as apositive reflection of the policies pursued. Mathematics is consideredthe most problematic areas, the most successful is the analysis of thedata. In the international arena, the opposite is the case. Level of skillsin the field of data analysis where the average student achievementscores were above the international average of 9 points. The basiccomponents that affect the academic achievement of students; thestudents themselves, the student's living space, family socioeconomicstatus, school and classroom environment, teachers and schoolmanagement features have been demonstrated to occur in the variables.Considered the most problematic areas in mathematics, is the mostsuccessful area of data analysis. Internationally it is the opposite case.Top-level data analysis average student achievement scores in the areawhere their skills on the international average of 9 points, while thefield numbers are at 31 points.