We studied the practical effects of a program in which the students themselves researched and presented the profiles of famous scientists in the science class. We divided students into two groups, and one group researched and presented scientists ’ profiles to another group. Then we investigated the effects of the program on the students ’ interests toward science and technology, scientists and biographies of the scientists, before and after the execution of the program. And we found that this program was apparently effective in both groups to increase their interests in science and technology through knowing the scientists’ profiles, and the effect was more obvious especially in the presentation group.