MacDonald, Beth L. Teaching mathematics conceptually : guiding instructional principles for 5-10 year olds / Beth L. MacDonald, Jonathan N. Thomas. - First edition - ix, 170 pages ; 23 cm. ISBN: 9781529791839 LCCN: 2022944707 Subjects--Topical Terms: Mathematics--Study and teaching (Elementary) LC Class. No.: QA135.5 / .M33 2023