International Journal of Educational Research and Studies

authors
Suci Dwi Rahayu, Ashadi, Sri Dwiastuti

abstract
The data collection technique is conducted by giving critical thinking skills tests based on indicators of critical thinking in plant structure and functions material. Data collection techniques in this study were to test critical thinking skills on the structure and function of plants. The research instrument used was validated by a team of learning evaluation experts as well as the item’s validity test using the Karl Person product moment correlation coefficient formula. The item reliability test has been carried out with the Alpha formula. Critical thinking ability as the dependent variable and the independent variable is gender. The sample consisting of 31 male students and 31 female VIII grade students of SMP Negeri 6 Surakarta. The sampling technique was carried out by random sampling. The results showed that the average percentage of female students' critical thinking skills in lant structure and functions material was higher than male students.