Read the article Developing a Classroom Culture That Supports a Problem-solving Approach to Mathematics.
It asks you to consider the following aspects of how you support maths / numeracy learning and use language with the children you are working with. It is written for classroom teachers but it has some excellent learnings for you in your support role. As you consider each question in the article, think about which aspects of your support strategies you might want to work on. The article describes a range of strategies for each.
The sample questions on the left are questions that you use at particular stages of a lesson.
They are taken from https://nrich.maths.org/10341
The sample questions on the left are questions that you use to encourage different levels of thinking.
They are taken from https://nrich.maths.org/10341
The sample questions on the left are questions that you use to encourage different types of mathematical skills.
They are taken from https://nrich.maths.org/10341
Use the following links to brush up on your maths language if unsure:
Problem solving framework