Studente guardando multiculturale compagni di classe mentre risolvere equazioni su lavagna durante la lezione di matematica - Foto e immagini stock

Back view of schoolboy solving equations on chalkboard during math lesson near teacher and multiethnic classmates

Back view of schoolboy solving equations on chalkboard near teacher and multiethnic pupils

Teacher pointing with hand while standing near schoolboy and chalkboard with equations

Back view of multiethnic pupils with hands in air, and teacher standing with open arms near chalkboard with back to school lettering

African american teacher reading book to pupils during lesson

Education, high school, university, teaching concept - group of schoolchild and teacher standing at white board at lecture

Education, high school, university, teaching concept - group of schoolchild and teacher standing at white board at lecture

Smiling beautiful teacher performing lecture for kids during lesson

Pretty student in glasses writing on flipchart with smile

Selective focus of smiling teacher looking at camera with kids at background in montessori school

Selective focus of smiling teacher and kid playing building blocks with children at background in montessori school

Selective focus of multiethnic schoolboys sitting near computers during lesson with teacher in stem school

Smiling blonde student in glasses standing near flipchart and looking at friends

Schoolboy with backpack holding digital tablet in stem school

Pensive schoolgirl with backpack looking away in stem school

Selective focus of kid taking color pencil near redhead child