High-q bandpass filter question

I have found this bandpass filter design on the net:
http://www.radio-electronics.com/info/circuits/opamp_band_pass_filter/op_amp_bandpassfilter.php
I understand how to build and configure it, and It is also ideal for my project. But in order to use it as part of my A level coursework, I must provide a component level explanation as to how it works. As this circuit is not in the textbook, this is proving rather difficult for me.
A quick and simple explanation as to how it works the way it does would be great, but as with all things electronic, the explanation is rarely quick and simple
Any help would be much appreciated
*101

 

Thanks!
This is so much more detailed than the textbook we are currently using...
Will definitely be referring to this in future.
cheers