Teacher and students doing science experiment in school classroom
Teacher doing science experiment with students in school classroom
Teacher and students doing science experiment in school classroom
Teacher and students doing science experiment in school classroom
Teacher and students doing science experiment in school classroom
Teacher and students doing science experiment in school classroom
Teacher and students doing science experiment in school classroom
Teacher and students doing science experiment in school classroom
Close up of teacher and schoolgirl doing science experiment in classroom. Two people working with test tubes and liquid in school chemistry class. Unknown individuals experimenting in gloves.
Slowmo mid-section of unrecognizable female chemistry teacher doing experiment in classroom
Teacher and students in school classroom with science experiment
Science students with teacher doing chemical experiment in the laboratory at university.