أثر استخدام أسلوب حل المشكلات في تنمية التفكير الرياضي لدى طلاب الصف الرابع إعدادي في محافظة النجف

The aim of this thesis is to investigate the effect of an educational problems solving for understanding on obtaining on obtaining mathematics and lateral thinking of 4th year secondary school for female strudels. The research population was composed of female secondary schools students in Najaf. (140) female students in fourth grade secondary female school was selected randomly as the sample of the study and was divided in two groups . An experimental set of (70) female student. A regulating set who learned according to thetraditional methael covalence was made between the two group of the variables ( prior grade in mathematics , intelligence level , prior needs , lateral thinking , age ). Statistical analysis was done , to find the acertainty of the cychometric properties for each scale and using the statistical tools to analyze the results.