Boy in school classroom looking at bubbling science experiment
Teacher and students in school classroom with science experiment
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.
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
Two students in classroom looking at science experiment
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