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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
sitting
sitting
university
education
Graduation Day
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
education
sitting
education
education
university
education
education
university
the student draws in a notebook in a cage with a pencil
education
