“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, vol. 1, no. 1, Oct. 2022, pp. 15-22, https://doi.org/10.66073/researchfocus.v1i1.1020.