iWriteMath PreCalculus 12 Edition Math Writing App supports the Western Canadian Curriculum and is a fit for most students across Canada. Using the latest technology in digital writing technology and learning styles our latest app for the iWriteMath Series is intuitive and easy to learn. Zooming into the question lets you write as much as you like under any question! Tapping on any question opens the solution for that question so you can immediately check the answers. You can also share your work with Teachers parents and tutors by sharing any saved writing pages you have created.