摘要：There has been exciting and serious progress in the field of computers for teaching English. Identification of the most effective methods is essential to make teaching and learning more efficient. The purpose of this study is to investigate the effects of using multiple content forms in web-based instruction on students’ English vocabulary learning. The study was conducted at the Compulsory Preparatory Program of a state university located in the Black Sea region of Turkey with 106 students. The factorial research design was used to conduct the study. Thus, the effect of using multiple content forms in web-based instruction on students’ English vocabulary learning was analyzed. The vocabulary level of students was measured with a web-based multiple choice English vocabulary achievement test. The measure of internal consistency of the English vocabulary achievement test was 0.966. The findings of this study indicate that, in vocabulary teaching, providing definitions in an audio format in English is more effective in teaching English vocabulary than providing the same definitions in an audio format in English accompanied with pictures. Mobile devices which eliminate the time and distance limitations can be used in further studies with developmental applications to investigate the effects on students’ English vocabulary learning.
