Ключевые слова: biology, biracial, book, chemistry, child, childhood, class, classroom, college, concept, education, elementary, experiment, female, girl, kid, knowledge, laboratory, learn, learning, lesson, looking, microscope, mixedrace, one person, people, practical, pupil, research, school, schoolgirl, science, scientific, scientific experiment, stem, student, study, studying, teacher, technology, unaltered, university,