There is a simple answer to this question. YES!
For IELTS writing task 1 (academic paper), the overview is the most important paragraph. It is the paragraph that contains all the key features to help the reader grasp the main information contained in the diagram.
You need to look at the stages and summarise them into one statement (max two statements). It is important that the examiner finds your overview quickly and easily, so always start with “Overall, …”.
The overview is part of the marking criterion of Task Achievement. See below how it affects your score:
- Band 5 = no clear overview
- Band 6 = an overview is presented
- Band 7 = a clear overview of main trends or stages
You can see how important this overview is. Even when you are given a diagram, you must give details of the main stages in your overview.
To see a model answer for a diagram and other useful tips for writing task 1 academic, click here: http://ieltsliz.com/ielts-writing-task-1-lessons-and-tips/
For anyone taking the IELTS GT test, you will be asked to write a letter. Always follow the order of the prompts given. Each prompt will be one paragraph. Add more detail to each paragraph from your imagination to make the letter realistic. Make sure you understand who the letter is to and what the purpose of the letter is. This will help you decide your tone and style. See this page: https://ieltsliz.com/ielts-writing-task-1-lessons-and-tips/
All the best
Liz