How the teacher's teaching is? the guided-inquiry-worksheets to enhance science process skills

This study aims to develop guided-inquiry-based worksheet by reviewing the validity, practicality, and effectivity of the product to improve the process skills and concept understanding of SMPN 2 Porong's students. Developed student worksheet is expected to link and reflect the "educator" to "learners" harmoniously, well-balanced, creativity inducing, and filled with fun learning activities. Learning with developed student worksheet integrates learning from real experience to form hands-on activities and minds-on activities in every student. The data collected by giving questionnaire and practical observation sheets, and study result test is analyzed by t-test. The result of student worksheet development shows score of 3.78 which is very valid to be used in learning. The uses of student worksheet shows score of 3.73 which means very good. The results of the practical observation and study results showed the score of 0, 000