The Effect Of Using Concept Map s On Achieving English Grammar ...

males on chemistry tests, especially on questions at the knowledge andcomprehension levels. The results also show that concept mapping helpedlow achievers achieve higher in chemistry. Students exhibited positiveattitudes toward using concept maps in chemistry .Guastello and et. al ( 2000 )This study investigates the effects of concept mapping on sciencecontent comprehension of low-achieving inner-city seventh graders , lowachievingseventh-grade students from an urban parochial school wererandomly assigned to two equally sized groups (n = 62, each group). Onegroup was taught by a read-and-discuss, teacher-directed method, and thesecond group, given the some type of introductory lesson as the first,followed a model of concept mapping that connected major and minorconcept ideas. A criterion-referenced test based on the content of a sciencechapter served as the depend ent variable. Prior to any teaching, a pretestwas administered. An analysis of covariance with pretest scores as thecovariate showed a statistically significant difference in comprehensionbetween the pretest and posttest for the experimental group. Effe ct sizeestimates revealed that concept mapping can be expected to improvecomprehension scores of low -achieving seventh graders by approximatelysix standard deviations over a traditional instructional technique. Whenstudents lack background information on a topic to aid comprehension, the77