Basic Maths/Economics needed for website

I'm looking to recruit tutors to prepare maths videos for University level maths, business maths, economics and statistics. The videos will involve you talking through a series of questions which I will provide you in a brief. I have attached a sample of a video I prepared for a University course which will give you an idea of the quality I would be looking for. Each tutorial will be around 30 mins. There is potential for lots of work as demand is very high Ireland for additional help in the more technical subjects like maths and statistics. I'm not looking for a sophisticated video it will just be a case of talking through the solution to a few questions. It shoudn't take more than a couple of hours to prepare if you are familiar with the content, have access to a tablet & digital pen and have a screen capturing software like Adobe Acrobat or Camtasia.