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Begin Research: Boolean Logic

Boolean Logic

The green area in the Venn Diagrams below represent your search results using the Boolean operators AND, OR, and NOT.

Drag the Venn Diagram to the correct description for the Boolean logic operator. The correct choice will stick to the box.

When you combine research terms with AND, you’ll find references in which BOTH terms are present. This narrows your search, since you are retrieving records with BOTH concepts. Example: endangered species AND global warming

When you use OR you will find words with EITHER concept, thus expanding your search. Example: corn ethanol OR corn fuel

When you use NOT you will get results that EXCLUDE a concept. This narrows your search and eliminates records with the unwanted concept. Example: Miami dolphins NOT football

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