It’s your decision. Not all lecturers strike, which means some, or all, of your classes might be going ahead as normal.
Lecturers do not have to tell their students beforehand if they are going on strike – the intention of striking is to cause disruption. However, your individual lecturers might tell you in advance if they are striking via email or blackboard. This is at their discretion.
Some students choose not to attend classes in solidarity with striking staff. This is respected, but if your classes are running, you will still be marked absent so keep that in mind.