The historical investigation consists of 3 sections.
You can view the complete guidlines on pages 84-86 of at IB History Guide, 2020.
This section requires students to analyse in detail two of the sources that they will use in their investigation. The sources can be either primary or secondary sources.
A crucial element of this section of the internal assessment task is formulating an appropriate question to investigate. The six key concepts for the history course (causation, consequence, continuity, change,
significance and perspectives) can be a very useful starting point in helping students to formulate a question.
This section of the internal assessment task consists of the actual investigation. The internal assessment task provides scope for a wide variety of different types of historical investigation.
The investigation must be clearly and effectively organized. While there is no prescribed format for how this section must be structured, it must contain critical analysis that is focused clearly on the question being investigated, and must also include the conclusion that the student draws from their analysis.
This section of the internal assessment task requires students to reflect on what undertaking their investigation highlighted to them about the methods used by, and the challenges facing, the historian.
Source :IB History Guide, 2020