Experimental activities of grade 7 students in Biology Experiments on: Observing Onion Cell Puzzle led by Serey Un, teacher of American Intercon School, Phsar Thmey Campus

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On February 10, 2022, teacher Serey Un led grade 7 students of American Intercon School, Phsar Thmey Campus to conduct a biology experiment on Observing Onion Cell Puzzle. At the beginning of the experiment, the teacher showed as well as described the experimental materials such as: optics microscope, thin glass, glass tube, dropper tube, needle,…