Super Grammar is an American website and book designed to make grammar and punctuation more interesting. 

Some of the names used in America are different in England, e.g.
Period = full-stop
predicate = the verb in sentence
quotation marks = speech marks or inverted commas

There are four teams of characters to help you learn more about grammar and punctuation.

The Completion Team 
The Amazing Eight 
Doctor Punctuation 
The Sabotage Squad