Rudy chłopiec dmuchanie świece na tort urodzinowy w pobliżu przyjaciół podczas imprezy w domu, sztandar - Zdjęcie stockowe & obraz

Maybe it was the wrong decision. Frightened little chemists and their teacher worrying about their dubious idea of mixing different liquids in a round bottomed flask

Cute children at lunch time in classroom

Cute children at lunch time in classroom

Work in team. Shocked woman wrinkling her forehead and keeping mouth opened while trying to stop the experiment

Panorama of pupils eating lunch in the classroom during a break. Blurred faces of girls in the foreground and two boys behind them

Group of happy children drinking juice from paper cups and having fun during a children's day celebration