from reputable manufacturers...
Promethean Activ 50-P WhiteBoard
Activ 50-P introduced by Promethean is an interactive whiteboard which was designed by teachers, for teachers and as a result it promises to be practical and useful in the teaching profession. Made with a solid screen, Activboard is resilent as it is durable. It will happily cope with variable temperatures, so an uncooled classroom over the long summer holidays won't impact on its excellent performance.
Integral to the Activboard is our specially designed electromagnetic grid, which will remain unaffected by any screen surface damage. The grid ensures incredible accuracy, with on-screen tools such as protractors, can measure down to a single degree. Activboard comes complete with two Activpens, that write exactly like pens with the added functionality of a mouse.