Korean science man teaches students chemical experiment with intense vaporization
Portrait shot of science educator teaching young students chemical experiment with vaporization
Kids and teacher looking at flasks in science experiment
Kids and teacher looking at flasks in science experiment
Young Scientist-Teacher Conducts Dry Ice Experiments for Children
Portrait shotting of group of caucasian school children in chemical lab. Pupils putting dry ice into the flasks with colorful water which causes intensive vaporization
Teacher and students in school classroom with science experiment
Male teacher teaching students in the classroom 4k
Male teacher teaching students in the classroom 4k
Male teacher teaching students in the classroom 4k