Part of the Abacus toolkit, the textbooks provide: * the perfect balance of practice and problem-solving for each area of math.s * pictorial representations to support children's conceptual understanding. * clearly laid out questions with instructions that are easy to follow. * a self-assessment opportunity on every page. * colour to indicate the different maths areas within the programme. Series Editor: Ruth Merttens Authors: Jennie Kerwin and Hilda Merttens.