The low success rate of math courses compared to other courses shows that there is a problem in this field of education. Therefore, that using innovative methods in teaching mathematics and scrutinizing mathematics teaching methods for educators is an issue you need to focus on as a priority. In particular, we believe this issue is a matter that should need to be emphasised from primary education. Because no matter how solid the foundation is, building constructed on it will be solid enough. That's why we chose this as a matter of our learning mobility projects to ensure the transfer of innovative and successful examples examining good practices in European countries achieved success in the field of mathematics education by our school staff on-site. "We Lay the Solid Base of Mathematics” has identified as the project name. That innovation movement in education must begin with staff training is one of the shared common thoughts in public of education. The development of region/area/institution can only be accomplished with very well trained manpower. Through our project, we want to help our school staff to become competent in their profession. 74% of the teachers participating in the research are complaining not to have high quality in-service training opportunities for teachers to develop themselves. Our project is considered to provide our school staff the opportunity of in-service training at the European level. Contributing to the development of usage of a foreign language of our staff is also one of the most important issues for us. In this context, a major step towards increasing the capacity of our organization will be thrown. Our project partners are Italy, England and Hungary. The participants of job shadowing held in this country will be selected by school staff. Through three job shadowing flow, 24-person-mobility will be carried out. During the job shadowing activity of our learning mobility project, the issues such as best practices observed by our staff, new teaching-learning methods, teaching materials, curriculum, textbooks, and so on will be transferred to other stakeholders in our province. About 500 administrators and teachers from other schools in our province also will have the opportunity to benefit from the results of our project thanks to “Mathematics Teaching Materials Exhibition" which will be held as a result of job shadowing visits performed as the main activity. In this exhibition, sample materials the project participants will prepare will be submitted to our colleagues. Again, " The Meeting - I Inform My Colleagues” that will be one of our project outputs is a dissemination activity that participants of the project will help the colleagues from other schools in our province benefit from their experiences they had through our project and they will transfer their experiences and enrich them. Within the project, to share information, ideas, best practices and experience, an interactive platform will be created and all participants will be encouraged to use this platform. In this way, our participants will be able to develop their digital skills. In addition, this platform will also be used in disseminating results. Works that increase the quality of school education will be improved and its continuity should be ensured. In this respect, we want our organization and our staff to improve their experience participating in European mobility and cooperation activities. We believe that we can achieve this with the help of this learning mobility project. The aim of this project we planned is to find the reasons why foundations of mathematics cannot lay solid and the average success of primary school students' achievement in mathematics courses is low, and as a result of these, to help the necessary educational measures. According to the structure of mathematics, how teaching, curriculum, methods, techniques with classroom and outside with variable and so on should be will attempt to be learned in the light of the best examples. It shall be determined that how primary school teachers in European countries teach math. In summary, examining how to perform this work in systems capturing the success is the basis of our project.