This paper surveyed thc et'fect of inlroducing preblern solving in the lesson at the I/Jniversity el Education. The obtained findings are as follows.{1) To compare with the lesson before introducing the problem solving. the students' artitude beeomc bettcr after introducirig it. They ]{sten to the tecture explanation: they talk about science riiatter eac]) othcT, thev thi]ik about science.(2) The students won high scorc of avcrage in the Iinal tesL after introducing problem solving.iXs for the probleni that the students had not been able to solve before. most of the students successfully solved it in the final tesl,