Analysis of Student Needs for the Development Video Demonstration of Science Practicum with Critical Thingking Orientation on Temperatur and its Changes

This study aims to conduct a preliminary on the analysis of needs junior high school students for development video demonstration science practicum oriented critical thinking temperature and its changes. research was conducted using Plomp model which consists three stages including (initial investigation stage), prototyping stage (prototype formation), assessment phase (assessment stage). In this article, it only explains who are at stage. by class VII.2 totaling 32 distributing questionnaires. The results data obtained were that almost all as subjects interested in video.