It's time to change. Time to collaborate. The Teacher's Book is interleaved with the pages from the Student's Book and includes background information; warmers and teaching tips; optional tasks for mixed ability at 3 levels; tips on collaborative learning; ideas for the flipped classroom; and help with new digital methodologies and tools. It also includes an introduction to the Key competencies in the LOMLOE, including a mapping to the Cambridge Life Competencies Framework. The Digital Pack on Cambridge One, accessible through a code in the Teacher's Book, offers Student's eBook and eWorkbook, Practice Extra, Collaboration Plus, Test&Train (levels 2 and 4) and other teacher resources.