How to Make Structural Speech

We know that the basic structure of a speech are introduction, opening, closing and such things like that. Now, if we're trying to make a perfect content of a speech, we also have to make it sctructural. and that strusture called AREL which stands for

Assertion

Reasoning

Evidence

Link back

Here is the example, and we consider that the topic is "internet is very useful"

1.Assertion : the core problem

I believe that internet is very useful

2.Reasoning: The explaination

because it has so many functions that may supports human daily needs.....

3.Evidence : Real prove

We could see from one example such as wikipedia,it is a site that......

4.Link back : So thats why,

So thats why,i believe that internet is very useful

so if you guys make those AREL in one pharagraph, it will be a structural speech :)