Why do tutors using the orton-gillingham learning method use pencils with no erasers on them?

Some teachers ask students to use pencils with no erasers on them so the student will be able to see their work without the ability to erase it. The philosophy of not erasing is based on thinking that erasing your answers does not allow you to learn from them.

As a dyslexic student, you are always learning how to do things better, like write better. When you are starting to write, you may make mistakes, especially spelling mistakes. These mistakes are something that you can learn from. If you are erasing your mistakes, then the thought is that you won't learn from them, if they are erased.

It is also very interesting when you look back years later at the mistakes you had been making, and no longer make as a result of the way you are new Orton-Gillingham approach to learning. Your mistakes stand as a testament to how well Orton-Gillingham works to correct the "old" ways of writing and spelling.