Developing an Online Mobile Based Diagnostic Instrument to Identify Science Misconceptions for Junior High School Students

Abstract

This research aimed to develop a test instrument in identifying misconceptions of three tier skills in junior high school science learning.. This study used instrument development model by Mardapi. The data method used a three tier misconception diagnostic test via Google Form. The research was conducted at SMPN 1 Kepung, SMPN 2 Kepung, and SMPN 2 Pare Kediri, East Java, involving 99 students of class VII IPA program. Analysis of the content validity used the Aiken V. The dichotomous item analysis used the 1-parameter Logistic Model (1 PL) or Rasch model. The instrument developed to identify misconceptions with three tier is declared valid and suitable for use. The diagnostic misconception instrument assisted by Google Form has met the expert validation with high validity. 10 items were developed, item 1 has a low difficulty level, so the item is too easy and not good to use in item number 2. While the other 9 items have a good difficulty level and can be used. The 10 items developed, the highest misconception was item number 1.