Due giovani studenti maschi e femmine che scrivono sulla lavagna bianca durante una lezione di matematica. - Foto e immagini stock

Two young male and female students writing on the white chalkboard during a math class.

Two young male and female students writing on the white chalkboard during a math class.

Two young male and female students writing on the white chalkboard during a math class.

Two young male and female students writing on the white chalkboard during a math class.

Two young male and female students writing on the white chalkboard during a math class.

Two young male and female students writing on the white chalkboard during a math class.

Group of young business people discussing business plan at modern startup office building

Young female student standing and writing on white chalkboard in a classroom

Young female student standing and writing on white chalkboard in a classroom

A group of students working together in a laboratory, dedicated to exploring the aerodynamic capabilities of a drone.

Group of a young business people discussing business plan at modern startup office building

Group of a young business people discussing business plan at modern startup office building

Within the heavy industry, a factory industrial engineer measures with a caliper and on a personal computer Designs a 3D model. High quality photo

Group of a young business people discussing business plan at modern startup office building

Group of a young business people discussing business plan at modern startup office building

Within the heavy industry, a factory industrial engineer measures with a caliper and on a personal computer Designs a 3D model. High quality photo