If you're at school you can just logon and write a new post. If you're out of school, at home or on holiday you can add a post by email. You can also share a Google doc and I'll copy it here so more people can see it and comment.
How awesome is that! Your classroom is flipping between home and school if you are beginning to continue your learning at home and back to school again! I am hoping to get Google Apps accesible to our senior students this year. Perhaps you could give us some advice?!