Following on from the original Problem Pictures CD-ROM, Problem Pictures Themes features another 300 magnificent colour photographs designed to bring mathematics to life. The photographs and activities are organised into themes which include Chocolate, Games & Puzzles, Mazes, Perspective, Time, and Wheels, as well as a large Medley section covering many other topics. U-Shaped Curves, Straight Lines & Gradients and Waves & Other Curves are three sections that can be used to model real-life curves in the photographs with graphs. Like the first Problem Pictures CD-ROM, this disc contains a varied collection of attractive and unusual images which are starting points for mathematical activities. The materials are viewed in a web browser making it easy to copy and paste to other applications.