Ключевые слова: advice, anatomy, attraction, awareness, blackboard, body, care, chalk, class, condom, contraception, contraceptives, diseases, education, health, healthcare, heterosexual, information, knowledge, learning, lesson, lessons, lifestyle, love, lust, medicine, orientation, pair, protection, safety, school, secure, security, sex, sexual, sexually, showing, student, teacher, teaching, topic, woman, words, written,