Preparation of authentic assessment instruments on instrumental analysis practice project-based to improve graduate competence

Abstract

The instrument has been tested to measure students’ competency level. Competencies measured include mastery of instrumentation analysis concepts, basic laboratory skills, instrumentation analysis skills, critical thinking skills, and scientific work abilities. Mastery of instrumentation analysis concepts is assessed through tests, basic laboratory skills and instrumentation analysis skills assessed through observation, critical thinking skills and scientific work abilities assessed through product assessment in the form of designs and reports from the project. The test results obtained that information from 30 test questions mastery instrumentation analysis concepts there is only 25 valid questions and measurement instruments mastery of the overall concept reliable with reliability 0.845. Authentic assessment instruments and rubrics as guidelines for evaluating basic laboratory skills, instrumentation analysis skills, and critical thinking skills, scientific work abilities were tested through 6 observers. Overall the results of the inter-rater reliability test obtained by interclass correlation (ICC) above 0.7 which means that authentic assessment instruments are valid and reliable.