image of caucasian man seen waist up sitting and looking up thinking, in front of chalkboard with mo

one person young adult man male caucasian people sitting position looking up thinking pose in front chalkboard moving mathematical calculations written chalk behind him waist symbols chalky texture thought process educational setting contemplating expression complex equations academic environment white thoughtful demeanor classroom vibe concepts intellectual activity problemsolving mode analysis progress background pondering pursuit numerical expressions equation solving learning atmosphere concentrated focus scholarly mental engagement writing understanding challenge chalkdrawn focused contemplation problems inquiry thoughtfulness analytical