The author team of David Barton and Anna Cox has been joined by Philip Lloyd to provide a brand new, easy-to-use, write-on workbook. It contains approx 80 self-contained assignments linked to the Delta Mathematics textbook, making it easy for the teacher to give practice to students without having to devise new work. It contains a huge array of exercises that are linked to the corresponding Delta Mathematics. This makes it easy for teachers to choose, and students to remember, homework, extra practice and revision exercises that match what has been done in class. This workbook can be used alongside any mathematics textbook, and contains the worked examples, content summaries, and real-world, in-context problems, investigations and puzzles that David Barton is famous for - encouraging all students to gain and demonstrate a thorough understanding of mathematical concepts at NCEA Level 3.