This series has been endorsed by Cambridge Assessment International Education. Help learners engage with and fully understand topics they are studying with an emphasis on mathematical thinking and working throughout. - Provide activities to increase student's subject knowledge and develop the skills necessary to think and work mathematically. - Engage learners with chapter openers that include historical notes with a cultural focus encouraging them to spot cross curricular links. - Support development of English language skills with the use of mathematical terms and activities to help facilitate effective teaching in classrooms with mixed English abilities.