What do the terms 'critical' or 'criticality' mean?
In an academic context, reading and writing critically means asking questions of the text as we read, and asking questions of the knowledge claims. We then need to decide what is worth commenting on, and what is not, and express these comments in writing.
Which questions should I ask? You can decide which questions are relevant to your reading from a wide range of critical reading questions.
How do I express my critical response to the text in writing? Have a look at the examples on the page about writing critically.