![](http://www.alamy.com/thumbs/6/31EC6F9F-EA4F-4217-9846-A99D6BBD33F8/FFKE89.jpg)
Boy thinking, scratching his head, blackboard with mathematical
Boy thinking, scratching his head against big blackboard with mathematical symbols
Size: 7278px × 4713px
Photo credit: © Jozef Polc / Alamy / Afripics
License: Royalty Free
Model Released: Yes
Keywords: angle, background, big, black, blackboard, blue, boy, chalk, chemical, child, classroom, clever, concept, doodle, education, equations, formula, head, kid, learn, man, math, mathematical, mathematics, molecule, pensive, quadratic, reaction, school, schoolkids, scratching, shirt, shot, sign, smart, standing, student, studio, study, symbol, text, thoughtful, white, wisdom, writing, young