%0 Journal Article %T The Effects of Homogenizing Small groups on the Efficacy of Problem-based Learning %J Nurse and Physician within War %V 3 %N 6 %U http://npwjm.ajaums.ac.ir/article-1-246-en.html %R %D 2015 %K Medical Education, Problem Based Learning, Matching, %X Introduction: Learning based on solving problem (PBL) , a useful and replacement educational method was against current and traditional methods and its particulars is teaching solve of problem and skills of learning, increase motivation and maintaining and keeping data. Educational directors and in charges are even in seeking finding of methods for more efficient of educational methods. Materials: This study was done as half experimental on 40 students of Medical training in Army University of Medical Sciences in 20015 .At first, method PBL in educational workshop taught to students in an educational workshop and 2 alike educational syllabus and the same level were selected according to method PBL   In 1st. stage, students were divided as random and in 2nd stage as Stratified Radon sampling from view of average to 5-person groups and educational syllabuses were taught according to method PBL. In any two stages, instructors and time and facilities, similar used were designed. Assessment of students by Pretest-Post test and opinion-assessment papers were done and results with software SPSS.16 and statistical test event were statistically analyzed. Results: in comparison rate of coefficient of hardness and volume of material under learning in two education stages, a meaningful statistical difference was not seen from view of students. (P>0.05) from one hand, comparison of average of results of previous test in 1st. stage with 2nd stage of education doesn't show a meaningful statistical difference. (P>0.05) Average of results of post test in 1st and 2nd stages of education of assessment that was compared orderly with results of pretest in 1st and 2nd educational stages and meaningful statistical difference was reported. P=0.00 Comparison of average of results of post test in 1st educational stage with average of results of post test in 2nd educational stage shows a meaningful statistical difference. (P %> http://npwjm.ajaums.ac.ir/article-1-246-en.pdf %P 55-60 %& 55 %! %9 Research %L A-10-1-89 %+ %G eng %@ 2645-3940 %[ 2015