Image magnification is one of the branches in digital image processing that is often required in various applications such as in the field of medicine, multimedia, and in satellite imagery. As technology grows, more and more methods are used for image enlargement. In this study, the image enlargement process performs by using Bi-Cubic spline interpolation method, and the result of image try to compare between the original one and picture after enlargement.
This study was conducted at SMP Negeri 8 Lhokseumawe about the development of rectangular and triangular pocket books against the background of the lack of availability of textbooks in schools, coupled with inadequate learning media that supports students to study independently, thus causing low learning motivation of students. and learning outcomes have not increased. The aims of this study: (1) To determine the validity of the development of rectangular and triangular surface area pocket books as learning media for junior high schools, (2) to determine the feasibility of developing square and triangular surface area pocket books as learning media for junior high schools, (3) to find out responses teachers and students on the development of rectangular and triangular surface area pocket books as learning media for junior high schools. The design of this research is research and development called Research and Development (R D) using the Borg and Gall model modified into 7 stages according to Sugiyono. Data collection techniques using validation sheets and questionnaires. The results obtained from the validation of media experts obtained a percentage of 91.48% and material experts obtained a percentage of 83.52% with a very valid category. The results of the feasibility of pocket books obtained a percentage of 84.69% with a very decent category, and teacher responses to pocket books obtained a percentage of 89.52% in a very good category, and students' responses to pocket books obtained a percentage of 80% in a good category. So it can be concluded that pocket books can be well received at SMP Negeri 8 Lhokseumawe. Recommendations from the research are expected to schools, institutions related to educational practitioners to conduct trials on a broad group so that the level of effectiveness can be known to support learning.
Research and development of the online quiz media for learning mathematics using the wordwall platform aims to develop, describe the validity, practicality and effectiveness of using wordwall online quiz media in the process of learning mathematics. This research and development method refers to the RD method using the ADDIE development model. The initial stage of the product will be validated by media experts and material experts and revisions will be carried out, then the product will be tested on small groups of 6 students in class X MIA 2, then it will be tested on large group students of 24 students X MIA 1 using the learning model TGT and research objects in the form of online quiz media using the wordwall platform, the research was conducted located at MAN 1 Lhokseumawe. The results obtained are: 1) validation of the online quiz media using the wordwall platform that has been developed "Very Valid" with a percentage of media experts of 93.52% and a percentage of material experts of 83.3%; 2) the practicality of online quiz media using the wordwall platform which was developed "Very Practical" with the percentage of large group students of 90.3%; 3) the effectiveness of online quiz media using the wordwall platform in the learning process that has been developed with a percentage of 87.5% but is less effective because its effectiveness cannot be measured because there are no written answers, so the media is less effective in seeing student mastery of the material. It was concluded that the online quiz media using a wordwall platform is valid/appropriate, practical but less effective for use in the SMA/MA level mathematics learning process because there are no written answers.
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