In the context of 21st-century education, numeracy skills are a required competency for students. Numeracy is a person's ability to understand and use mathematics in solving problems in everyday life. To ensure an effective learning process, supporting teaching materials are needed to enhance students' numeracy skills, such as student worksheets. This study aims to evaluate the validity of student worksheets based on computational thinking and local wisdom of Musi Banyuasin, supported by GeoGebra, to enhance students’ numeracy skills. The validation process by experts produced validity test data collected using a validation sheet in the form of a Likert scale questionnaire, which was then analyzed to determine the level of validity of the student worksheets. The results of the average percentage of student worksheets were activity 1 reached 84.05% and activity 2 reached 84.82% in the first meeting. By the second meeting, activity 1 reached 86.2%, and activity 2 reached 86.51%. Thus, it can be said that the student worksheets developed has met the criteria of being very valid, so it is worthy of use. This indicates that the worksheets contribute positively to the field of mathematics education by providing effective support for improving students' numeracy skills.