Allievi concentrati che tengono strutture molecolari mentre sono seduti in classe durante la lezione di chimica - Foto e immagini stock

Pupils with flasks doing chemical experiment during chemistry lesson

Smiling schoolgirl raising hand in class during chemistry lesson

Elementary School Science Classroom: Enthusiastic Teacher Explains Chemistry to Diverse Group of Children, Little Boy Mixes Chemicals in Beakers. Children Learn with Interest. High quality photo

Elementary School Science Classroom: Enthusiastic Teacher Explains Chemistry to Diverse Group of Children, Little Boy Mixes Chemicals in Beakers. Children Learn with Interest. High quality photo

Little boy and girl in white coats using microscopes and reagents in chemical laboratory

Chemistry teacher looking at pupil with beaker and flask in classroom

Schoolboys with backpacks looking at camera near blackboard with educational icons

Group of kids preparing for sport competition and holding hands

Selective focus of educator and kids playing with educational constructor in kindergarten

High angle view of tutor and multicultural children drawing together in kindergarten

Kids drawing pictures with colorful pencils while father using laptop on sofa at home

Tutor teaching multiethnic kids counting and showing number with fingers in kindergarten

Selective focus of father helping sons draw pictures with colorful pencils at home

Side view of little brothers drawing pictures at table at home