Comparisons of Learning Achievement in Summation Subtraction and Multiplication of Decimal, Problem Solving and Attitude toward Mathematics of Pratomsuksa 5 Students between TAI and TGT

Theresearchaimed to: 1) develop the managing planof Mathematicsgroup learning method in summation, subtraction and multiplication of decimal of Pratomsuksa 5 students, TAI and TGT group learning methods efficiency as criteria 75/75 2) find the effectiveness index of both group learning methods 3) compare the learning achievement in summation, subtraction and multiplication of decimal, problem solving and attitude toward Mathematics of Pratomsuksa 5 students between TAI and TGT group learning methods. The samples of this research were 40 of Pratomsuksa 5 students in second ? term of the 2556 acadamic year from the schools in Koksamran education network center, Koksamran, Banhad district, Khonkaen, Khonkaen Primary Educational Service Area 2 which were selected by cluster random sampling method, 19 students wereselected from Bandonpordangschool and were taught by TAI group learning method, 21 students were selected from Bandongnongkeaw school and were taught byTGTgroup learning method.The research instruments contained (1)TAI and TGTgroup learning method plans (2) achievement test in Summation Subtraction and Multiplication of Decimal (3) problem solving test (4) questionnaire of attitude toward Mathematics.The statistics used in this research were percentage, mean, standard deviation and Hotelling’s T? for the hypothesis testing.