An Innovation Grant funded by the Georgia Department of Education

Bill Jordan, Instructor
Thomasville City Schools
Thomasville, Georgia

Search Engines: Looking for Stuff in all the Right Places

Objective: The purpose of this assignment is to teach you how to conduct key word searches with several common search engines.
Vocabulary: The vocabulary in this lesson deals with some of the simpler concpets of search engines

strategy

search engine

key word

phrase

hit

Background Information: At this point, you should have bookmarked the search engine sites mentioned in the previous lesson.

When you are searching for information, it is a good idea to have a strategy--a plan--so that you don't waste a lot of time browsing through useless information. You want as many hits as you can get, but you don't want them to locate irrelevant information. Usually, you have a topic in mind and some key words or phrases to help you narrow your search. For example, imagine that your science teacher has assigned you to find out information about Sojourner, the little remote controlled rover that recently went to Mars. Regardless of wheter you use the World Wide Web or the library to look up information, you need to decide how you are going to find the information you want. That is your strategy. Are you up for a little experiement?

What you happen if you used the key word Mars? A pretty broad search strategy that would get you a lot of information, but not much of it would deal with Sojourner. What if you the phrase "remote rover" instead? That is more specific, but you might also expect some useless information. Now, what if you just used the name of the rover itself? That actually seems like the most efficient strategy. One other possibility would be to use the phrase "Sojourner rover" as your search strategy. Rather than keep you in suspense, here's what happened when I submitted these four possiblities to the Yahoo search engine.

Search Strategy Hits Comments
Mars 83 Categories and 2135 Sites Lots of hits, but a lot of them had nothing to do with Sojourner.
remote rover 25 Sites These sites were about a variety of things-- including the Martian Rover--but overall they were not that useful.
Sojourner 1 Category and 19 Sites This looked pretty good, but not a single one of the sites had to do with the Martian rover!
Sojourner rover 2394 Sites Pay dirt! Practiacally everyone of these sites dealt with the Martian rover.


Yahoo, of course, is not the only search engine, so you should expect different results from other search engines. Although the last search strategy--the phrase "Sojourner rover" produced paydirt--the fact is that you would have to spend a lot of time to search every single site. When you get such a large number of hits, you have two choices: scan the list for what looks useful or refine your search strategy. You will learn how to refine your search strategy in a later lesson.

So how do you get a search engine to perform a search? When you enter any of the search engine sites that you bookmarked in the last lesson, you will usually see a blank white field waiting for you type in your search terms. This example is from Yahoo. All you have to do is click your cursor in the field and type either a key word (such as Mars) or a phrase (such as "Sojourner rover").

Important: Please pay special attention to the phrase "Sojourner rover"--it is in quotation marks. You should get in the habit of using quotation marks around your search phrases in order to get the best results.

It is also important to pay attention to what you get back from the search engine. For example, in Yahoo, the first information will be major categories that you can click on and browse through lists of sites. Categories can be helpful because they tend to lump lots of similar web sites together. After the categories you will find a list of individual sites that you can retrieve if any look interesting just by clicking on the link.

Online Assignment: Use any one of the other six search engines (just not Yahoo) that you bookmarked in the last lesson and conduct the same search I did: Mars, remote rover, Sojourner, and Sojourner rover. Report the results to me by e-mail.
Reading Assignment: Even though you read pages 58-59 in the PC Novice Guide to Netscape for the last assignment, you might want to review it again now. Many of the things mentioned in that reading assignment should be clearer to you now.
Homework Assignment: Think of a topic that you are intersted in--anything will do. (Thinking of a topic is often the hardest part of the assignment. Think of something related to school, a hobby, a career, etc.) Next decide on whether to use a keyword or a phrase as your search strategy. Then use any one of the seven search engines you bookmarked and conduct your search. Send me the results by e-mail.
Competencies: After completing this assignment, you should be able to use keywords or phrases to conduct searches using at least two different search engines.


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Copyright 1997. All Rights Reserved.
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Thomasville City Schools
915 East Jackson Street
Thomasville, GA 31792


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Created: 12/15/97 10:27:00