One of the factors of Indonesia's low educational achievement is the low ability to solve mathematical problems. Problem solving ability is the main goal of learning mathematics, which emphasizes and develops thinking skills in solving mathematical problems, including in everyday life. The cause of the weak mathematical problem solving ability is student errors in understanding mathematical concepts. We need a solution that can actively involve students in solving problems, namely with the help of learning media in the form of interactive worksheets. Therefore, this study aims to determine the validity and practicality of Liveworksheets interactive worksheets. This research uses research and development (R & D) methods. There are 6 stages carried out during the research, namely, initial field findings in the form of potential/problems, data collection with test questions and interviews, making interactive worksheet designs Liveworksheets, validity testing to material and media experts as well as practicality tests and interviews with class VIII students regarding worksheets interactive Liveworksheets. After going through the stages above, the results obtained are the validity of material experts and media experts who get a very valid category so that the feasibility of Liveworksheets interactive worksheets is appropriate. The material validity is 97.72% and the media validity is 90.17%. And the results of the practicality test on the assessment aspects of the Liveworksheets interactive worksheets obtained 91.7% results which indicate that they are included in the very practical category.

Kata Kunci : Liveworksheets, Interactive, SPLDV