I need an image or illustration created for our business document

Information for the business: education tech
Industry: Technology
Design details: We need an illustration, similar to the link below, to use in a business document. The image we want has to illustrate "The Evolution of Education".
We want the following image components and the graphic should flow from the first to the last:
to start from a class being addressed by a teacher using only his voice (no blackboard etc.)
A teacher using a blackboard with chalk
Student carrying many books
Teacher using overhead projector
Teacher using interactive whiteboard with a student at the front of the class using the whiteboard too
A class of student using iPad tablets and the teacher also has one

http://welearnindia.files.wordpress.com/2014/01/digitaleslernen_evolution.jpg

We like the colours in this link:
http://newqurantranslation.files.wordpress.com/2012/01/scientific_education_evolutionary_biology_152.jpg
Target audience: business investors
Ideas for the visual style: http://newqurantranslation.files.wordpress.com/2012/01/scientific_education_evolutionary_biology_152.jpg
Urls to draw inspiration from: http://welearnindia.files.wordpress.com/2014/01/digitaleslernen_evolution.jpg
Where the design will be used: print
Extra notes: