Dos colegialas sentadas detrás de un escritorio, mirando en un libro coorful. Su compañero de clase resolviendo ecuaciones matemáticas en una pizarra en un fondo borroso. - Foto e imagen de stock

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

Concentrated beautiful schoolgirls sitting in class

Smiling african american schoolgirl standing near chalkboard and looking at classmates sitting at desks

Schoolchildren getting ready for lesson at classroom

Back view of pupils sitting at desks and schoolgirl raising hand at lesson

Lively little kids doing home science project, passing a flask. All wearing glasses. Chemical glassware and colored liquids on the table.

Happy little kids doing home science project, girl is documenting the process. Girls wearing protective glasses, boy making surprised face. Chemical stuff on the table.

Funny little kids doing home science project, looking at each other in uncertainty, not sure what to do. All behid table, wearing glasses. Chemical glassware and colored liquids on the table.

Imaginative playful little boy writing nonsense on a black drawing board, pretending to be a teacher. Wearing suspenders, looking gallant.

Handsome playful little boy writing nonsense on a black drawing board, pretending to be a teacher. Wearing suspenders, looking gallant.

Preschool motor skills for handwriting development, girl does exercises. Mom and daughter sitting at the table

Eight year old girl trying to do home science project, checking her plan. She is wearing plastic glasses and has glass chemical equipment and microscope

Focused immersed little girl sitting behing a big table next to a window, painting with watercolor in front of a laptop, using it as a template. low angle.