male hands involves drawing on chalkboard. toning. selective Focus
Close up of unrecognizable architect or engineer drawing construction scheme on chalkboard
Slowmo close-up of unrecognizable hand of businesswoman drawing business graph on chalkboard
Dolly-in shot of man drawing square on chalkboard while solving complex geometry problem
Portrait of little Asian boy holding paper drawing of American flag and posing for camera with smile against chalkboard with space rocket drawing in school classroom
Girls hands with a pencil drawing in a notebook. Closeup of a teenage girls hand drawing on a paper.
Portrait of little African American girl holding US flag paper drawing and smiling on camera while standing by chalkboard with space rocket drawing in school classroom