The purpose of this paper is to introduce an ongoing Erasmus+ project "Maths Teachers' Adventure of ICT Integration (MTAII)" and its outputs. The main aim of the project is to provide professional development for mathematics teachers to integrate Information and Communication Technologies (ICT) into their lessons. To achieve this, three intellectual outputs have been designed; an open online course (OOC), open educational resources (OER), and an online teacher community (OTC). In the scope of the OOC teachers should gain insights about ICT integration into mathematics classrooms. Through development and dissemination of OER we aim to help overcome the scarcity of resources. Through support of peer teachers and researchers at participating organizations we hope to establish an OTC including the teachers participating in the OOC. This paper focuses on the design of the three outputs.