Teacher and pupil at chemistry lesson in classroom
Palabras clave
background,
boy,
caucasian,
chemical,
chemistry,
children,
children,
class,
classroom,
clever,
desk,
education,
exercise,
experiment,
flask,
glassware,
growth,
children,
cognition,
laboratory,
learn,
lesson,
liquid,
little,
male,
man,
people,
person,
pupil,
reaction,
reagent,
research,
sample,
school,
science,
scientific,
sitting,
smart,
solution,
study,
studying,
table,
task,
teacher,
test,
work
){kind=link}