nervous boy in front of a blackboard with chemical formulae

amiable beautiful blackboard blond blue boy boys casual cheerful chemistry child childhood children classroom confident content contented cute dressed education endearing fashion freckles friendly grin grinning guy hair hairstyle hand hands handsome happiness happy hoodie jacket kid kids kind kindly laugh laughing lesson likable likeable look lovable lucky male nervous nervously person pleasant pleased portrait pull pulling pulls rascal rogue ruffle rumple satisfied scalawag scallawag school schoolboy schoolchild smile smiling style surprise surprised sweat young youth