I am looking for workshop ideas i can use to develop the english level of math teachers. A new curriculum is being introduced and the books are all in english. The previous books were all in a different language. So, i need to help math teachers to teach math lessons and plan through the english language.

Use a gentle approach: give each teacher an area to cover during the workshop, i.e. addition for one, multiplication for another, and so on. Keep it SIMPLE. When it is time for the workshop, the leader (is that you?) should be the first to present one area. This should be done in a light-hearted manner, and if necessary, make intentional mistakes in your presentation. You're aim is to set an informal atmosphere so nobody feels uncomfortable, regardless of their level of English.

Once everyone has survived this workshop, then it may be time to start fine-tuning the teachers' teaching skills for this English language and maths class through further workshops.

By nature, these two subjects don't usually go along well together. Most people are divided into two groups based on their skills in either maths or languages. It's usually one or the other, not both. So bearing this in mind, your poor teachers are going to have a rough year ahead of them!

Be gentle on them and good luck!