Confident geometry teacher in formalwear pointing at blackboard with formulas
Copybook with sketches of triangles held by geometry teacher explaining theorem
A geometry teacher draws a section of a pyramid with a plane with chalk on a blackboard
shocked geometry teacher touching face and pointing with finger at chalkboard with illustration
Geometry teacher stands at the blackboard and draws a section of the pyramid with a plane with chalk
Confident teacher of geometry pointing at triangle on blackboard
Caucasian teacher of geometry and mathematics draws with chalk on a blackboard
Confident teacher of geometry pointing at drawing of triangle on blackboard
Hand of young teacher of geometry drawing triangle with unknown angle
A young teacher stands at the blackboard and explains the material on geometry to students
Young serious female teacher of geometry listening to African American student
Children answering teachers question
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the teacher draws on the blackboard with chalk
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the teacher draws on the blackboard with chalk
Copybook with geometric shapes and formula against pupils sitting by desks
the teacher is holding a compass,
Secondary teacher writing physics formula on whiteboard
Seious stylish boy in spectacles tries to understand how make task in geometry, listens attentively
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Young woman teacher writes on the blackboard with chalk closeup
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