For a sustainable world, it is very important for students to develop positive environmental attitudes and to have awareness of energy use. The study aims to investigate the effect of web assisted instruction with emotional intelligence content on 8th grade students' emotional intelligence, attitudes towards environment and energy saving, academic achievement related to the subject, the correlation between students' academic achievement and their emotional intelligence. Totally 60 students (35 female, 25 male) in experimental group and 60 students (37 female and 23 male) in control group participated in the study. Emotional Intelligence Scale (EIS), Environmental Attitude Scale (EAS) and the Academic Achievement Test (AAT) were administered as a pretest to experimental and control groups. The application was conducted two hours per week in three weeks time and the research was completed in 6 weeks time. While the experimental group was taught by the software enriched by EI content, the control group was treated with traditional teaching methods in the same subject (Environment and energy saving). Following to the application, EIS, EAS and AAT were administered as post test to the experimental and control groups. The findings of the study reveal that following to the application, there are statistically significant differences in favor of experimental group students' academic achievement, EI and attitudes towards environment.