Profesora de matemáticas o estudiante universitaria escribiendo ecuaciones en una pizarra de tiza revisando el trabajo de clase en una tableta portátil - Foto e imágenes de stock

Maths teacher or mature student writing on a chalk board completing equations with the aid of a handheld tablet

Over the shoulder view of a young woman studying in class using a tablet computer with the blank screen with copyspace visible to the camera

Portrait of a young dedicated Maths teacher holding a tablet PC while writing on greenboard during class in a modern school

Close-up Of Person Holding Digital Tablet At Desk

Close-up Of Female Student Over Digital Tablet Screen In Front Of Chalkboard

Close-up Of Student Learning Mathematical Equations On Digital Tablet

Clever attractive young female college student wearing glasses and holding a tablet computer in her hands standing in front of a chalkboard covered in equations in maths class smiling at the camera

Teacher holding a tablet with a blank display in front of a blackboard with numbers written on it with chalk

Female student holding up a tablet computer with the blank white screen visible to the viewer with copyspace for your advertisement, photo or text

Over the shoulder view of a young female student using a mobile phone in class with the blank screen visible to the viewer

Young girl reading her tablet-pc in class looking at the screen with an expression of anticipation as she sits at her desk in front of the chalkboard

Attractive young female student wearing glasses using a tablet in class smiling as she reads the screen

Teacher or post graduate student reading a tablet computer as he leans against a clean blank chalkboard in the classroom

Rear view of young female student writing on chalkboard in classroom

Smiling teacher holding a big binder clutched to her chest in front of the blackboard looking at the camera with a vivacious smile

Side view shot of blond woman thinking in front of green board

Young student or teacher standing in front of the blackboard in college reading a text message on her mobile phone smiling as she reads the news

Profile view of a thoughtful girl wearing glasses sitting in class at college with her chin resting on her hand and a blackboard with text behind her

Attractive young female student wearing glasses sitting at her desk thinking in class with a blackboard with text in the background