The Pupil Book has been designed with a larger font size, shorter line length and the reading age fully considered to ensure that it is accessible to the appropriate ability level. National Curriculum Level 3 is covered in support chapters that provide materials and questions to consolidate this level, and covers all of Level 4 with extension into Level 5. Pupils are encouraged to learn how topics interrelate with each other through the use of icons in the Pupil Book and references in the Teacher Support File.