This study aims to determine the usability level of the product developed in this case a simple natural science practical guide for elementary school oriented environment. This type of research is a descriptive study. The practicum guide is the subject of research and the practicality of the practicum guide which is designed as an object of research. In this study, the level of practicality was measured using a questionnaire given to students to see student responses after using the practicum guide. The data were analyzed using a Likert scale to analyze the practicality of the product. The Likert scale is a scale that has a gradation of ratings, namely very good (5), good (4), not good (3), not good (2) and very bad (1). Practicality data that has been filled in through a questionnaire and then added up. The total score that has been obtained is converted into qualitative data on a scale of five. The results showed that the practicality of a simple natural science practicum elementary school oriented environment has been tested. Where the score with very practical criteria amounted to 3 people with a percentage of 8%, the criteria were quite practical amounting to 2 people with a percentage of 6% and the practical criteria were 30 people with a percentage of 86%. The overall practicality average score of the practicum guide is 25 and has practical criteria.