Wardhani, A.P. and Alatas, F. 2026. The Effect of PDEODE Learning Strategy (Predict – Discuss – Explain – Observe – Discuss - Explain) on Students’ Critical Thinking Skills on Sound Wave Material. Kasuari: Physics Education Journal (KPEJ). 9, 1 (Jun. 2026), 268–281. DOI:https://doi.org/10.37891/kpej.v9i1.1232.