Ключевые слова: adult, biological, biology, chemical, chemistry, children, class, classroom, college, concept, discovering, education, elementary, european, experiment, female, girl, group, growing, high, kids, lab, laboratory, learn, learning, microscope, natural, nature, people, person, plant, sample, scales, school, science, scientific, student, students, study, studying, teacher, teen, teenage, teenager, test, together, university, woman, young, youth,