Argumentation is a skill and as such can be practiced and honed. There is a whole list of elements to consider, such as your claim on the issue, the evidence, the logical, emotional and ethical appeals you will make, the language you will employ. Learn to construct a logical argument and avoid fallacies, which are errors in critical thinking and judgement, so as to convince your audience or readers of your stance on an issue.
What is validity in argumentation? In order to qualify as a good argument, it must be valid, as well as strong. So, how does one maintain validity in critical thinking and writing? There is no need to struggle with these issues, since there are clear definitions and examples of valid and invalid arguments.
What is strength of an argument? How can I make my arguments stronger and improve my critical writing skills? These are questions that many students struggle with, but fortunately there are methods and ways to improve.