Stock Photos: caucasian

Trying to teach students some geography
Children teach us to notice little things in life again
An efficient way to teach a kid to care about the others
That'll teach her for constant nit-picking
That'll teach her for constant nit-picking
Feeling quite serious when thinking about science
Pensive mature man bitting his eyeglasses
This science decision is not my thing
Mature professor seems to don't understand something
Quite contented with work result
Old professor holding small blackboard
Guess, this kiddo doesn't want to study at all
Guess, this kiddo doesn't want to study at all
If you call me old timer once again...
Mature professor looking confused
Well, it looks like quite new information for me
Well, are you ready to start your learning process?
Mature man adjusting his eyglasses and looking lost
Old professor holding globus and seems bothered with something
Old professor holding digital tablet and seems like saying something
Old professor holding globus and looking hugely distured with something
Oh, how could you say it, it's my favorite book
Taking a closer look on places to visit
Excited mature professor adjusting eyeglasses
Old professor touching his beard and reading a book attentively
Old professor standing at the table and holding digital tablet
Laughing old professor with his eyeglasses on his head
I have some problems with understanding that
Yeah, this is what i call a good quality thing
Well, do you have any thoughts about that?
Old professor standing at th table and looking attentively on digital tablet
Serious looking mature professor with eyeglasses off and hands folded
Older woman using phone while young one sneaking out with cup
I'll get you anyway!
I think i've done a pretty good job but feel free to ruin it as you wish
Laughing mature professor holding his glasses
Mature professor adjusting his eyeglasses
Old professor holding book and looks surprised
Serious looking old professor standing with his hands folded
Mature man pointing up and looks like explaining something
Smiling old professor holding small blackboard and pointing on it
Who's ready to start study time?
Serious looking mature professor standing with hands folded
mature professor looking lost and mad
I just can't go with what's written here
Well, and what we're gonna do about that?
Oh, i didn't see it coming
When science work's been just great
Amazed old professor reading a book
Old professor sitting half sideways and using digital tablet
This subject needs a serious consideration
Involved in thoughts old professor holding globus
My elder brother is so smart
My elder brother is so smart
Old professor seems like saying something and holding a tablet
This digital device is quite a thing
Serious mature professor adjusting glasses and seems like not understanding something
Information in this book just blows me away
Smiling mature professor standing with his hands folded
Old professor holding a book and seems like talking to someone
Excited old professor holding book and pointing on it
Mature serious looking professor standing with eyeglasses on head and hands folded
Surprised old professor holding globus and pointing on it