Un niño ocupado de la escuela pequeña con teléfono inteligente sentado en el escritorio en el aula, jugando. Un peligro de adicción . - Foto e imágenes de stock

Group of schoolchildren having fun at classroom during break

A small tired and bored school boy sitting at the desk in classroom, sleeping.

Curious and excited cute little boys and girls listening and attending lecture while focusing and concentrating on studies in classroom

Cute little schoolchildren sitting at desks and writing in exercise books

Multiracial group of kids at primary school - Playful schoolers enjoying school time and lesson with teacher and classmates

Schoolchildren getting ready for lesson at classroom

A group of small nursery school children sitting on floor indoors in classroom, listening to teacher.

Young teacher with model of wind turbine learning her pupils about wind energy.

Happy friends working on school project together. Classmates learning about renewable energy.

Happy friends drawing together in the room.

A group of small nursery school children sitting on floor indoors in classroom.

A group of small nursery school children sitting on floor indoors in classroom.

Happy friends drawing together in the room.

Young teacher with solar panel learning her pupils about solar energy.