Profesor de química sonriente con bata blanca explicando la lección frente a la pizarra - Foto e imágenes de stock

Chemistry teacher in white coat with digital tablet pointing with hand at blackboard

Beautiful young teacher explaining math formulas written on blackboard in classroom

Mature male teacher reading paper at desk in classroom

Writing on blackboard. Smiling pleasant teacher wearing glasses holding chalk while writing on blackboard

Schoolgirl in yellow sweater writing on blackboard with chalk

Pensive schoolchild in glasses looking up near blackboard with different professions in speech bubble

Smiling schoolgirl writing on blackboard with chalk and looking at camera

Cheerful smiling schoolgirl sitting at desk and looking at camera in classroom

Cropped shot of mother and daughter learning numbers on chalkboard

Schoolgirl with pink backpack writing on blackboard with chalk

Smiling boy writing math example on blackboard with chalk and looking at camera

Pensive schoolchild in glasses looking up near blackboard