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'The Technique And Procedure Employed In A Study Of The Relative Difficulty Of The Elementary Number Combinations' presents a detailed exploration into the methods used to assess the varying levels of difficulty associated with basic arithmetic operations. This study, authored by Bernhard Philip Heubner, offers insights into the design and execution of educational research focused on mathematics. It provides a historical look at techniques for evaluating the cognitive demands of simple number combinations. The text would be of particular interest to educators, researchers, and historians of mathematics education seeking to understand the methodologies employed in early 20th-century educational studies.This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.