Daftar Isi:
  • Development of student worksheets based on Project Based Learning (PjBL) on Acid-Base material has been conducted in XI IPA class of SMA N 1 Indralaya. This research was conducted by ADDIE development model and modified Tessmer formative evaluation. The aims of this research to produce student worksheet based on project based learning that is valid, practical, and effective. The validity of material an is v Aiken value of 0,775 with a high category and the Kappa value is 0.526 with a significance value of 0.011, the validity of pedagogics has a v Aiken value of 0,895 with a high category and the Kappa value is 0.667 with a significance value of 0.002, the validity of design an is v Aiken value of 0,785 with a high category and the Kappa value is 0.690 with a significance value of 0.001. The practicality of this student worksheet can be seen from the average score questionnaire in one to one and small group stages. Practical score in the one to one stage is 0.805 with a good category and in the small group stages is 0.811 with a good category. The effectiveness of student worksheet looks from the results of the fieldt test wuith an n-gain score of 0,75 with a high category. It can be concluded that the student worksheets based on project based learning on acid-base material is declared valid, practical and effective.