The best way to learn mathematics is to practice over and over. We use DWO – the digital mathematics environment – for tests and exercises. Students who don’t get a particular concept can practice with DWO – even at home – until they really understand it. This goes much further than just a doing sums. It is the depth of the approach that distinguishes DWO from a textbook with exercises. I find that the software saves me time too. Marking is automatic, so I can focus on what really matters: helping my students with the subject matter.