Chemistry school lesson. Pupil learning chemical formula, elements. Scientific experiment in laboratory with chemistry flasks, reagents. Lab scientific researches. Elementary schools education
Palabras clave
children,
book,
class,
vector,
chemistry,
blackboard,
classroom,
college,
school,
elementary,
cognition,
laboratory,
learn,
lecture,
lesson,
physics,
pupil,
research,
teacher,
scientific,
study,
chemical,
formula,
education,
science,
whiteboard,
chalk,
student,
course,
test,
person,
people,
molecular,
molecular,
training,
chemist,
experiment,
microscope,
desk,
laboratory,
children,
supply,
substance,
reaction,
biotechnology,
element,
tube,
flask,
reagent
){kind=link}