The Colon is a punctuation mark that is used in very specific instances. You should use a colon after an independent clause to indicate to the reader that a list, an apositive or a quotation will follow. Colons are also used in the salutation of a formal letter, between hours and minutes when indicating time, to show proportions, between titles and subtitles, and between city and publisher in a bibliography.
Source: Kathleen Hanley
The answers to the worksheet appear in the second PDF.
The dash is a punctuation mark used in specific instances. The dash may be used to indicate information that need special attention. A dash may also introduce a list, a restatement, further explanation, or a startling change in tone. A dash can also be used to set off a change in topic in the midst of a sentence.
Source: Kathleen Hanley
