Our project is an e-curriculum development project of English according to CEFR level B1. It will focus on project-based learning in all activities. We will use CLIL technique. Teachers' " peer learning" includes CLIL method. On the other hand, peer learning in students occurs in their collaborative output and web 2.0 tools will be used.The students will be responsible for creating activities related to the cross-curriculum. We aim to improve 21st century skills of students and teachers as well.