The document outlines an experimental study that examines the effect of internet-based materials versus textbook materials on teaching listening comprehension, considering students' learning interest. It presents background on factors like teaching materials, listening comprehension, and learning interest. The study aims to determine if internet-based materials are more effective than textbooks, if students with high interest comprehend better, and if there is an interaction between materials and interest. It will use a 2x2 factorial design experiment involving pre- and post-tests with eleventh-grade students, collecting data through tests and questionnaires then analyzing it statistically.