Abstract:
The aim of this study was to investigate the effects of practical work enriching instruction of biology
lessons on 9
th
grade students‟ attitudes toward biology lessons and thair achievement based on
students‟ success. This study is conducted with 59 students of 9
th
E in diaspora secondary school
thought biology course in 2019 G.C. And the sample selected randomly from the total 8 sections of
9th graders. Attitude pre-test , attitude post-test, achivement pre-test and achivement post- tests are
employed for all participants in addition to intervewing four students randomly selected from the total
participants. Experimental teaching method was used for two weeks for all participants on one of the
lesson selected randomly in the text called osmosis and diffusion. . attitude pre-test, attitude post-test,
achievement pre-test and achivement post - tests are employed for all participants in addition to
interviewing four students randomly selected from the total participants. The test was applied to
students in two different times. The first test was applied before and the second test was applied after
the intervention. Paired sample (dependent sample) t-test was used to compare the two results of
students‟ attitude and achievement test by using 5 % level of significance. According to the research
results, it was found that experimental teaching method was more effective in the attitude and
achievement level of students in some biology lessons, attitude and achievement has positive
correlation. So the study recommend that high school biology teachers should plan their lessons in
more practical way to boost (enhance) learners attitude as well achievement. All stakeholders
including curriculum planners should take part in the planning process.