2022. METHODOLOGY OF THE “I HEARD – I SAW - I DID” PRINCIPLE OF THE PEDAGOGICAL EDUCATION INNOVATION CLUSTER (CHIRCHIQ MODEL) IN TEACHING NATURAL SCIENCES. Research Focus International Scientific Journal. 1, 1 (Oct. 2022), 15–22. DOI:https://doi.org/10.66073/researchfocus.v1i1.1020.