Developing Mental Maths with 9-11 Year Olds By Bibby, Tamara Books / Paperback Books ISBN: 0590537652 / Publisher: Scholastic, November 1997 Price Starting at $6.81 Free Shipping Send to a friend Add to Wishlist Below is a list of products arranged by condition. Select the quantity of the product you desire and click the "Add" button. Used - Very Good Very Good condition. $6.81 1 in Stock at Warehouse Quantity Add Free Shipping to continental U.S. OR $1.00 per item discount if shipped to store. Reviews Goodreads reviews for Developing Mental Maths with 9-11 Year Olds