Blog as an educational tool

In our school every pupil and teacher has his or her own blog. Teachers insert home tasks, as well as information about trips in the blog. Pupils insert their homework in the blogs which are checked by teachers. It's comfortable to use blog for every subject except Mathematics. It's not comfortable to write Mathematics in blog because there are some symbols we can not find in the blog. In our school blog is the main tool for the education because we don't use copybooks and pens, but it has a negative side too, we don't write very often so we can't write beautifully and sometimes we don't remember the letters.