KS1 Problem Solving is a progressive series of books which help children to sharpen their mathematical skills by applying their knowledge to a range of ‘real-life’ situations such as shopping and telling the time. KS1 Problem Solving Book 1 would be suitable for children moving from the Early Years Foundation Stage to KS1 and those already in KS1. The book includes: addition and subtraction to 20, counting money and calculating change, days of the week and estimating time, 2-D shapes, weight and capacity.