In this video we will discuss how to write your variable section.
We will talk about your independent and dependent variables and your control variables.
This section is marked under the exploration criterion.
Your variable section should have a very clear structure.
You can simply follow the structure that I will show you in the example IA.
As you can see, variables are in the first subsection under planning.
This is further divided into independent variable, dependent variable and control variables.
For the independent and dependent variables, be sure to use their full name and add units.
In this IA I have four control variables.
The exact number will depend on your investigation, but you should probably have at least three.
For each control variable I include the reason why it should be controlled and the method
of how it will be controlled in the experiment.
I will just quickly show you my other three control variables, which are glass cross-sectional
area liquid used in the glasses and air temperature.
This completes step three, action one, so now you know how to write your variable section.
In the next video we will talk about your apparatus diagram.