dissatisfied teacher looking at student who talking on smartphone in classroom
pensive male teacher in glasses sitting at computer desk with notebooks and coffee in classroom
upset schoolgirl looking at camera near notebooks, globe and chalkboard on blurred background
Boy writting on black board
playful schoolgirl sitting at desk with book and apple on head
Female teacher looking at young student in classroom with chalkboard on background
Young girl having an outdoor math lesson by a tree
female teacher helping male student with assignment during lesson in classroom
Handwritten Mathematical Calculations and Potential Cypher on Paper
Young student using laptop and sitting near teacher in class
Selective focus of young student in glasses sitting at desk
Female teacher in blazer crossing arms and smiling in classroom with chalkboard math and posters
girl schoolgirl near blackboard
Female teacher looking at young student and smiling in classroom
schoolgirl in eyeglasses smiling at camera near laptop and chalkboard on blurred background
female teacher pointing at chalkboard with hand during lesson in classroom
girl schoolgirl near blackboard
Female scientist standing and holding clipboard by whiteboard with formulas at lab, copy space
Female teacher sitting at desk and pointing at something in classroom
Calculator placed on a solid pink background in a simple setting for basic math tasks
positive schoolkid adjusting eyeglasses near laptop and chalkboard on blurred background
Milling cutter, slide rule and mechanical scheme
Female teacher standing in formalwear and looking at student in classroom
male student holding book near smiling female teacher in classroom
Female teacher sitting at desk near laptop while student standing near chalkboard
Work on the scheme bearings in a classroom
Selective focus of male student sitting at desk and raising hand
Verification the mechanical parts of the diagram
girl schoolgirl near blackboard
Measuring and comparing the results of the bearings with mechanical scheme
