Ключевые слова: academic, arms crossed, back to school, beaker, black, blue, boy, caucasian, cheerful, chemical, chemicals, chemist, chemistry, child, childhood, class, classmates, classroom, computer graphic, cute, desk, development, digital, digitally generated, early learning, education, elementary, elementary school, equipment, experiment, female, flask, formula, girl, green, grey, happy, knowledge, learn, learning, liquid, male, microscope, pupil, red, research, school, schoolchild, science, scientific, smiling, substance, vignette, white,