Year 3 Hands-on Maths : 10 Minutes of Concrete Manipulatives a Day for Maths Mastery, Paperback, ISBN 0008266972, ISBN-13 9780008266974, Brand New, Free shipping in the US Use manipulatives 10 minutes a day with these simple at-a-glance activities! Just 6 weeks of these activities will give children a richer and deeper mastery of maths by demonstrating abstract ideas and core mathematical concepts in a variety of representations and problem-solving contexts.