A geometry teacher draws a section of a pyramid with a plane with chalk on a blackboard
Caucasian teacher of geometry and mathematics draws with chalk on a blackboard
Constructing with lots of colorful plastic sticks.
education
Constructing with lots of colorful plastic sticks.
Young woman teacher writes on the blackboard with chalk closeup
Geometry teacher stands at the blackboard and draws a section of the pyramid with a plane with chalk
education
A young teacher stands at the blackboard and explains the material on geometry to students
education
education
education
university
hands
Pythagorean theorem, math class in the school
Young confident teacher in eyeglasses and smart casualwear drawing angle
Confident teacher explaining female student how to solve equations
Chalkboard, geometry game, and little notebooks
Hand of young teacher of geometry drawing triangle with unknown angle
Math formulas on black chalkboard
Confident teacher of geometry pointing at drawing of triangle on blackboard
Young serious teacher of college or university drwing triangle on blackboard
Confident geometry teacher in formalwear pointing at blackboard with formulas
African American student writing down algebraic equation on blackboard
Youthful student pointing at blackboard during explanation of equation
Workplace of teacher with gdgets
Confident teacher of geometry pointing at triangle on blackboard
Maths formulas written by white chalk on the blackboard background.
In school, young Caucasian girl with curly blonde hair looks thoughtful in the classroom
Young serious teacher concentrating on work with electronic documents or tables
