Baraka, S.H.A. and Islayyeh, H. 2026. The Levels of Depth of Knowledge (DOK) Embedded in the High School Chemistry Textbooks in Palestine and the Extent to which Students Acquire them. Humanities and Educational Sciences Journal. 56 (Sep. 2026), 263–292. DOI:https://doi.org/10.55074/hesj.vi56.1929.