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...A measure of rulers the importance units in philippa bragg and lynne outhred macquarie university sydney recent publications continue to show that significant numbers students junior grades while competent basic ruler skills seem not have acquired important concepts about how work length this paper reports on results set tasks completed by from many at end their primary schooling are unable identify unit for or commonly used one centimeter cube it is suggested early measurement activities include explicit instruction relationships between informal construction scales introduction years increasing attention has been paid teaching mathematics lessons analyses data gathered through regular large scale testing national assessment educational progress naep shown steady overall improvement since there appear be gaps student understanding formal measuring tools strutchens martin kenney becomes apparent when asked lengths aligned zero no constructed adequate understandings property wilson rowl...