Today I found this blog that could be interesting not only for teachers, but also for students in Bachiller, since it is a blog to improve the mistakes that are usually made in English.
The name of the blog is called: habla mejor inglés.com
For example, this entry would be very useful for speaking or writing skills, since sometimes we don't know whether we should use the verb "make" or "do":
The webpage that I am going to introduce today is awesome. There you can find games, grammar activities for all levels, grammar explanations and links to other blogs and interesting websites.