145 JISE 7 (2) 2018 : 145-149 Journal of Innovative Science Education http://journal.unnes.ac.id/sju/index.php/jise Improving Conceptual Understanding of Eleventh Grade Students on Colloid Topic Using Multimedia - Assisted Probing - Prompting Dita Try Oktaviyanti  , Sri Wardani, Cepi Kurniawan Universitas Negeri Semarang, Indonesia Article Info ________________ Article History: Received January 2018 Accepted March 2018 Published August 2018 ________________ Keywords: Probing-Prompting, Interactive Multimedia, Conceptual Understanding. ____________________ Abstract ___________________________________________________________________ This study aims to determine the effect of interactive multimedia- assisted probing - prompting learning model on conceptual understanding of students. Population in this study was the students of class XI of State SHS 11 Semarang academic year 2017/2018. Sampling was done by purposive sampling technique and obtained three classes as the samples namely class XI-Science 1 and class XI-Science 4 as the experiment classes, and class XI-Science 3 as the control class. The study method used was mix methods with Sequential Transformative Strategy model. The study data were obtained by test and observation methods. The results showed that Interactive multimedia-assisted probing-prompting learning model had an effect on students’ conceptual understanding with percentage improvement in two experimental classes of 24.15% and 15.12%, respectivelly. © 2018 Universitas Negeri Semarang  Alamat korespondensi: Kampus Pascasarjana Jl Kelud Utara III, Semarang 50237 E-mail: ditatryoktaviyanti@gmail.com p-ISSN 2252-6412 e-ISSN 2502-4523