Clear instructions and step-by-step activities support and improve maths, mental maths and times tables skills. Look out for the other develop your skills books to practice key stage 2 skills at home.,Dimensions: Height:8 mm, Width:210 mm, Depth:0.7 cm, Length:276 mm, Weight:341 g,Care and composition: Safety Warning:Not suitable for children under 36 months due to small parts