• It\'s a wipe-clean reusable addition book. • Answers can be written in crayon, felt pen or washable marker pen. • Book is 29.5 x 21 cm (11½\" x 8¼\") The Fun to Learn Wipe Clean series aims to teach children a range of basic skills to prepare them for their first school years. Using laminated wipe-clean pages, children can enjoy the activities again and again. The beginner\'s wipe-clean workbook provides a fun way to introduce maths. The pages begin with smaller numbers and build up to large ones and includes the basic sums from 0+1 to 10+10 and represent the numbers as objects the child can relate to. Answers can be written in crayon, felt tip or washable marker pens and then wiped clean so the pages can be used again. Additional details: Packaging size: 240mm x 180mm x 6mm Recommended age: 3-5