Wakijem, W. (2022) “Improving Teacher Ability in Preparing HOTS Questions Through Workshop Activities at Kebonharjo Public Elementary School Kapanewon Samigaluh Kulon Progo for the 2021/2022 Academic Year”, IJCER (International Journal of Chemistry Education Research), 6(2), pp. 129–132. doi: 10.20885/ijcer.vol6.iss2.art10.