This is a four paged, laminated “fold-over” card, A4 in size. It provides us with a unique six-step system to instant recall of addition and subtraction tables. Includes easy to use number strip (1-20), number line (1-40), addition grid and a 100 square. Lots of tips, tricks and practical applications. There is large print on this card and minimal language for younger students.Suitable for 1st and 2nd class students in primary schools.