Optimalisasi Keterampilan Higher Order Thinking Skills (HOTS) Peserta Didik melalui Model Discovery Learning Berbantuan Laboratorium Virtual Berbasis Smartphone: Optimizing Students’ Higher Order Thinking Skills (HOTS) through the Discovery Learning Model Assisted by Smartphone-Based Virtual Labs. U-Teach. 2026;7(1):87-97. doi:10.30599/0ngma458