How Can I as a Teacher Help a Dyslexic Student?

I am a teacher and don’t know how I can help the children in my
 class who show signs of Dyslexia?

Again, like for parents, it comes down to understanding the mind set, 
embracing their differences, rather than putting tags on them that
 usually don’t apply. They are often perceived as lazy, as they may be 
able to do a task one day, but not the next. I have heard teachers use 
this as a reason why it can’t be dyslexia, because they were 
able to do it yesterday.

However, that’s exactly the point. When Dyslexics are focused, instead of a state of confusion and disorientation, they
 demonstrate a higher level of ability and competence. When tired, confused, or distracted, all abilities go out the window, together
 with the child’s mind.
 Another word that is not useful is “Concentrate”. It makes people 
become tense and achieves the opposite of what you want: focus! Focus 
is born of ease and placing one’s attention to one area. If done
 correctly, focus is only a breath away and an important tool for the 
mind to return to the body, even if things aren’t easy. 
I have given the book by Ron Davis (‘The Gift of Learning’ and ‘The
 Gift of Dyslexia’) to teachers, but I doubt that many have actually 
read it.