Boolean Operators

Boolean Operators,[link widoczny dla zalogowanych]
The purpose of this lesson is to teach students how to use the Boolean operators of "AND", "OR" and "NOT" [or "AND NOT"] in online searching to either narrow or expand the results. The teacher explains that these terms are used to narrow or expand the results in online searching.
The teacher tells the students that they are going to help demonstrate the meaning of each Boolean Operator,[link widoczny dla zalogowanych].
The teacher should ask all students who are wearing jeans to stand up. All others should sit down. Count the number of students still standing. All the students wearing jeans should stand,[link widoczny dla zalogowanych], all the students wearing blue shirts should stand,[link widoczny dla zalogowanych], and all the students wearing jeans and blue shirts should stand. Count the number of students standing. This should be a larger number than before. The OR operator has expanded the results.
To demonstrate the NOT operator,[link widoczny dla zalogowanych], the teacher asks all students wearing jeans but NOT sneakers to stand. The NOT operator has excluded all students wearing sneakers. It has,[link widoczny dla zalogowanych], therefore,[link widoczny dla zalogowanych], limited the results.
The teacher should demonstrate using these operators in an online search,[link widoczny dla zalogowanych]. The Advanced Search of Google allows the searcher to find results:
with all of the words (AND)with the exact phrasewith any of the words (OR)without the words (NOT)The following keywords can be used as an example: dolphins AND whales,[link widoczny dla zalogowanych], dolphins OR whales,[link widoczny dla zalogowanych], dolphins NOT Miami.
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