Abstract
The research aims at defining the impact of group investigation model of critical thinking for history department students at college of Basic Education. The society of the research was third year students at history department at the college of Basic Education for the academic year 2012-2013. the sample included (40) students divided randomly on two groups of the research (20) students at the experimental group that used the suggested program and (20) students in control group who used traditional method. Equivalence between both groups was done in the variables of (sex, age, previous semester of history). The researchers used the tool of Al-Aloosy (2005) and underwent a panel of experts in education and psychology to find surface reliability of the tool. Stability was found using re-test reading (0.87). statistical data of the results was done. The results showed statistically significant differences between both groups in favor of experimental group used the suggested program as well as supremacy in conclusion, knowing hypothesis, induction, evaluate proofs and explain results in critical thinking. The researchers made a number of recommendations and suggestions such as asserting the use of group investigation model on teaching history due to its importance in enhancing critical thinking. The necessity of urging them and give explanations about critical studies in other materials and variables such as achievement or mediative thinking.
