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

B ) According to content of the test :Table (18)T.test results of differences between experimental and control groups in contents of the testscope group N Mean Std. Deviation tFUTUREPASTconditionSUMexperimental 56 18.732 6.077control 57 11.649 3.691experimental 56 23.446 7.654control 57 14.491 4.610experimental 56 20.071 6.461control 57 12.456 4.018experimental 56 62.250 20.169control 57 38.596 12.284Sig.valuesig.level7.503 0.000 sig. at0.017.549 0.0007.538 0.000sig. at0.01sig. at0.017.544 0.000 sig. at0.01“t” table value at (111) d f. at (0.05) sig. level equal 1.98“t” table value at (111) d f. at (0.01) sig. level equal 2.58Table ( 18) shows that there are statistical ly significant differencesbetween the experimental group and th eir counterparts in the control infavor of the experimental group during the method in the content of thesyllabus and the total degree. Thus the suggested strategy has a positiveeffect on improving the skills for the experimental group.Table (19 )"t" value, Eta square " η 2 " , and "d" for each scope and the total degreeScope t value η 2 dEffectvolumeFuture 7.503 0.337 1.424 LargePast 7.549 0.339 1.433 LargeCondition 7.538 0.339 1.431 Largetotal 7.544 0.339 1.432 largeTo specify the effect size of the conce pt maps the researcher used Etasquare "η 2 " table (19) shows that:118