Hattie, John Visible learning for mathematics: what woks best to optimize student learning grades K-12 - California: Corwin: A SAGE Company 2017 - xvii, 269 pages; 23 cm. Includes bibliographical references, appendices and indexes ISBN: 978-1-5063-6294-6 Subjects--Topical Terms: LC Class. No.: QA 16 H38 2017