Abstract: This study entitled Effective Speed Scanning Indonesian Dictionary Seventh Grade Students of SMP Negeri 1 Pagaran Tapah Darussalam Rokan Hulu. This study aims to determine the level of effective scan speed of large Indonesian dictionary and to determine significant differences between the class A and B class VII SMP Negeri 1 Pagaran Tapah Darussalam Rokan Hulu. The method used is desc…