Ключевые слова: background, biological, biology, boy, brainstorming, chemical, chemistry, class, classmate, classroom, college, discovery, discussing, education, equipment, ethnicity, exam, experiment, friends, girl, glassware, group, hand, high, highschool, interacting, lab, laboratory, learning, man, mate, microscope, mixed, person, practicing, room, school, study, talking, team, teamwork, technology, teen, teenager, together, university, woman, working, young,