Development of four-tier assessment to detect student misconceptions

Abstract

This study aims to develop a four-tier assessment that is used to detect student misconceptions about salt hydrolysis. This type of research is development research using a 4D model (define, design, develop, disseminate). The sample in this study were 3 expert validators to test the feasibility of the assessment and 10 students for small class trials. Based on the results of the study, it was shown that from the feasibility test of the assessment by 3 expert validators, an average of 4.2 was obtained with the category suitable for use. Assessment trials in small classes show that the highest misconception is in the indicator of analyzing salt compounds that are in accordance with the experimental results, namely 60% of students, calculating the pH of salt solutions from strong bases and weak acids by 50% of students, determine salt compounds based on the pH value of 50% of students, analyze mixtures that undergo partial hydrolysis and are acidic by 50% of students and 50% of students who have misconceptions on indicators analyze the reaction equation of hydrolysis of acidic salts. The developed four-tier assessment can be used to detect students' misconceptions about the salt hydrolysis material.