What is Core Activity

One of the greatest challenges regarding CLIL implementation, especially for mathematics content learning, involves materials design. CLIL materials are expected to be incorporated from authentic sources, but reality shows that they are usually adaptations of previous materials or originals designed ad hoc to meet the curriculum requirements. Following Mehisto's criteria for producing CLIL learning materials as well as Meyer's successful planning and teaching strategies to design quality CLIL resources, this chapter presents a case study of designing and producing quality CLIL materials for mathematics content learning developed in the framework of the Erasmus+ Project Framing CLIL. Based on telecollaborative international work, multilingual CLIL materials to learn about fractions are presented, and the main challenges and the key strategies followed to cope with them successfully are addressed. Finally, practical orientations and guidelines for the design, and an elaboration of CLIL materials for mathematics content learning is presented.