This paragraph makes no sense.
Your homework is to write a paragraph about Da Vnici's childhood.
The sentence in a paragraph that summarizes what that paragraph is about
Generally the topic sentence is the first sentence of the paragraph and the rest of the paragraph explains or gives examples of the topic sentence. The topic sentence can also be the second sentence of the paragraph. This is when the first sentence is a linking sentence that links the paragraph to the previous paragraph. Sometimes the topic sentence can be the last sentence in the paragraph
A sentence that summarizes what the paragraph will be about is the topic sentence.
if a paragraph does not have a topic sentence then
A deductive paragraph is a paragraph in which the topic sentence is stated first. The first sentence of a deductive paragraph should be the topic sentence.
It is the first sentence of a paragraph which is the topic sentence.
the first sentence of the paragraph is called the topic sentence which should describe most of the paragraph for the reader to understand. The topic sentence is usually the first sentence of a paragraph. It makes a statement (about a topic) and the rest of the paragraph explains the topic sentence or gives examples of the topic sentence. The second sentence of a paragraph can sometimes be the topic sentence. Sometimes it is called a summary sentence.
if a paragraph does not have a topic sentence then
The first sentence in a paragraph helps to specify the topic on which the paragraph is written.
A sentence that concludes the paragraph and closes it is a clinching sentence. It is the last sentence in a paragraph that makes a conclusion.
Final.
A linking sentence is a sentence to finish off a paragraph as well as starting the other paragraph.