I love the revolution that is taking place in education - there is so much to learn and enjoy. And I am the greatest fan of the Khan Academy which enables anyone anywhere to get to grips with simple algebra, linear equations, understanding anything from US government through finance to fine art in 7-10 minute slots. Here are a couple of things for you to dip into - I leave the algebra up to you - but you can see the whole range of learning opportunities on www.KhanAcademy.org. I am an addict and watch something whenever I stop for a pot of tea.
I think I showed this Robert Campin triptych some time ago when we were looking at cloths - one to protect the held book, the bag on the table for books, the ceremonial towel hung at the back of the room. Now you can listen to a discussion of this painting.