The assessment of the effects of web-based teaching which is designed according to ?hypermedia design model? in science and technology classes to the academic performance and attitudes of students and the assessment of the views of teachers and students about the content of web-based teaching

The aim of this study to examine the effect of Web-based teaching designed for unit ?The States of Matter and Heat? in the Science and Technology Lesson for the 8th Grade on the academic performance of the students and their attitudes towards Web-based teaching.The research is carried on in two different stages. In the first stage, Web-base materials and the content of the Website are to be used in Web-based teaching are prepared. In the second stage, the effectiveness of Web site materials is examined.Taking the qualifications in literature into consideration, the Web site that enables student-student and student-teacher interaction, exchanging knowledge, following the course content and implementing the assessment and evaluation activities is prepared. In the evaluating stage of the Web site to determine the deficiencies, a pilot study with 52 teachers and 118 students is held. The main application is held after removing the determined deficiencies about the Web site. In the application process, quasiexperimental model is used and the related unit is applied on the experiment group consisting 29 students on Web-based teaching. And the present methods and techniques in the curriculum are used for the control group consisting 31 students. Comparing the prepared achievement test with pre-test and final test points provide us the achievement and attitudes of both groups. An interview is held with experiment group students and teachers about the content of the Web site and the implementations of the Web-based teaching as well as the quasiexperimental model.At the end of the research, most of the sample group students assessing the Web content agree that the materials which take place in content are adequate especially in terms of visual quality and content. It is stated by the students that they are satisfied and pleased with the activities, experiments, games, animations and such items taken place in the content a lot since that they love to use computer. It is determined that the interactive Web-based materials enable students to do experiments which are not carried out in the class, increase motivation and make the lessons more enjoyable. The students also state they make use of the Web site in terms of interaction and communication. In addition to this it is stated by the students, the great number of questions in the content enable them to practice and the Web-based teaching is free from time and place restrictions. In the second stage of research which composes the academic performance and attitudes when the scores of achievement tests and attitudes scales of experimental and control groups are compared significant difference in favor of experimental group is observed.Keywords: Science Education, Web-based Teaching, Hypermedia Design Model