Dolly-in shot of cheerful male university professor standing before blackboard with complex calculus formulas and posing for camera with his hand on chin
Dolly-in shot of male Arab university professor solving complex calculus problem on blackboard, then turning towards camera and smiling
Portrait of schoolchildren posing with complex calculus formulas
Portrait shot of student amazed by complex calculus formulas at blackboard
Portrait of schoolchildren with complex calculus formulas, giving thumbs up
Portrait shot of cheerful schoolgirl standing against blackboard with complex calculus formulas thinking how to solve it
Portrait of schoolgirl with complex calculus formulas, posing confidently
Intelligent girl in glasses excelling in calculus, raising hand
Young student ponders complex calculus formulas in classroom
Dolly-in portrait shot of smart female mathematician in glasses standing with her arms crossed before blackboard with complex calculus formulas
Dolly-in portrait shot of smart male mathematician with serious expression on his face standing with his arms crossed before blackboard with complex calculus formulas
Rear view of male university professor solving complex calculus problem on blackboard