Development of Interactive Electronic Book Based Mathematics Teaching Materials on Cube and Cuboid in Junior High Schools

This research is motivated by the students’ difficulties in imagining the building of three-dimensional space of cubes and cuboids especially when imagining the diagonal of space and the diagonal plane. Based on these problems researchers conducted research aimed at developing electronic book (e-book) based mathematics teaching materials on cube material and cuboids for the eighth grade of junior high school. E-book based mathematics teaching materials made by utilizing Adobe Acrobat Pro applicationis a document format in PDF form that can be inserted three-dimensional images and video. This research is a development by modifying the model of Thiagarajan (1974), comprising the steps of define, the design stage and develop stage. The subjects of the trial were the 8th grade students of SMP Negeri 2 Pagedangan. From the results of testingan e-book based mathematics teaching materials by the four validation experts, an average score of 4.42 was obtained from a maximum score of 5.00 with a very good category. From the results of the trial of e-book teaching materials by students obtained an average score of 4.06 from a maximum score of 5.00 with a good category. Overall, the interactive electronic books based on mathematics teaching materials are suitable to be used in learning cube and cuboid material.