Schoolboy solving a problem on a blackboard.
Boy and blackboard filled with math formulas
Boy and blackboard filled with math formulas
Dissatisfied female teacher standing near chalkboard and speaking with student in classroom
Wooden numbers in tables to learn mathematics in a Montessori classroom.
female teacher in formal wear with wooden pointer explaining mathematical equations in classroom
crumpled paper balls flying at frightened female teacher in classroom with chalkboard on background
crumpled paper balls flying at male teacher with arms crossed in classroom with chalkboard on
Female lecturer standing at desk near chalkboard with equations in class
beautiful female teacher with wooden pointer explaining mathematical equations in classroom
Schoolboy solving a problem on a blackboard.
female teacher with wooden pointer holding glasses and explaining mathematical equations in
Student in glasses looking at laptop with female teacher
Smiling friendly bearded middle-aged male teacher standing alongside a chalkboard
Cute teddy wearing glasses black chalkboard background
Schoolboy solving a problem on a blackboard.
Young teacher and student in the classroom during the first maths lesson
Wooden numbers in tables to learn mathematics in a Montessori classroom.
female teacher looking at camera and pointing with finger at mathematical equation on chalkboard in
Wooden numbers in tables to learn mathematics in a Montessori classroom.
Schoolboy solving a problem on a blackboard.
Schoolboy solving a problem on a blackboard.
pensive male teacher in glasses sitting and using laptop at desk in classroom
Mature male high school maths teacher explains blackboard exercise to asian teen student.
Young teacher and student in the classroom during the first maths lesson
Schoolboy solving a problem on a blackboard.
male student holding book near smiling female teacher in classroom
Notepad on a green background with different colored markers. Concept: school year, children's drawi
Student in glasses using earphones and talking on smartphone in classroom
Young teacher and student in the classroom during the first maths lesson
