STEM: Science, Technology, Engineering and Maths Principles V10 eBook covers all the topics of this popular software title used in schools and colleges worldwide for over twenty years and now available as a Tablet and Smartphone App. See Additional Notes at the back of the book for instructions to download the accompanying interactive App which brings the 250+ topics to life by allowing you to insert your own values. Visually on a phone or tablet it looks almost identical to the eBook pages, except you can edit the inputs to update the graphics and calculations to reflect those changes. There is also an optional comprehensive PC version to download with even more features both applications can be unlocked with your eBook purchase receipt for no additional charge. A combined eBook, App and PC educational package at a tiny fraction of the previously published price.