Information Literacy and Effective Search
FoundationInformation literacy is the ability to recognise information needs, search effectively, evaluate reliability and use information ethically. Good keywords and search operators locate material fast; authority, accuracy, currency and purpose judge it; citing sources and verifying before sharing prevent plagiarism and rumour.
- Four stages of information literacy: recognise needs, search effectively, evaluate critically, use ethically
- Keywords must be precise; quotes lock phrases, minus signs exclude, site: restricts the domain
- Evaluation criteria: authority, accuracy, currency, purpose
文體小知識：科技知識說明文——講解資訊素養的內涵，搜尋器的有效搜尋技巧，以及評估網上資訊可靠性和合乎道德使用資訊的方法。
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1The internet floods us with information of mixed truth, so information literacy has become a basic skill of the digital age. It covers four stages: recognising your information need and what question must be answered; searching and obtaining information effectively; critically evaluating its reliability and suitability; and using it ethically and lawfully. Literacy is not only for schoolwork — it also serves for judging viral messages, shopping decisions and lifelong learning.
2Search engines retrieve pages by keyword. Before searching, clarify the core concepts and pick concrete, precise terms rather than typing a whole sentence. Search operators narrow results dramatically: quotes around a phrase demand an exact match; a minus sign before a word excludes it; site: with a colon restricts results to one domain. Too many results — add words; too few — try synonyms and adjust the keywords.
3Finding material is not the same as trusting it. Evaluate on several fronts: authority — government departments, universities and professional bodies beat anonymous posts; accuracy — are sources cited and claims supported by evidence; currency — is the information up to date and which year do the statistics belong to; purpose — is the page built to inform, promote or sell, and whose interests does it serve? Verify important conclusions against several independent sources; never trust a single one.
4Using others' information means respecting copyright and intellectual property: cite sources, and copying without acknowledgement is plagiarism. Verify before forwarding; do not spread what you cannot confirm, and never become an amplifier of rumours. These habits protect you from being misled and keep the information environment healthy — to search, evaluate, verify and use information responsibly and consciously is information literacy in its fullest sense.
1Summary 重點摘要
Information literacy is the ability to recognise information needs, search effectively, evaluate reliability and use information ethically. Good keywords and search operators locate material fast; authority, accuracy, currency and purpose judge it; citing sources and verifying before sharing prevent plagiarism and rumour.
2Vocabulary cards Vocabulary
The ability to recognise information needs, search effectively, evaluate sources and use information ethically.
A service that indexes web pages and returns links matching the keywords entered.
A precise word or phrase entered into a search engine to find relevant pages — concrete rather than a whole sentence.
A symbol that narrows a search, such as quotes for exact phrases, a minus sign to exclude, and site: for one domain.
Words such as AND, OR and NOT used to combine or exclude search terms.
The criterion of how credible a source is, judged by the publisher's expertise and reputation.
How up to date the information is, judged by its publication or revision date.
False or inaccurate content spread without checking, whether or not intended to deceive.
Using others' work or ideas without acknowledging the source.
The legal right of creators over the use of their original works.
3Step by step Steps
- Step 1: Recognise the information needClarify the question before searching: what must be answered, and what kind of material is needed — data, definitions or an official position? For example, for the assignment "the current handling of solid waste in Hong Kong", what is needed is the government's latest statistics and policy documents, not personal blog opinions. Write down the core concepts and pick two or three keywords — the search is half won.
- Step 2: Choose effective keywordsSearch engines match pages by keyword, so terms should be concrete and precise, free of filler. For example, typing the whole sentence "what is Hong Kong's latest arrangement for regulating plastic tableware" works far worse than typing Hong Kong disposable tableware regulation. Too many results — add words; too few — try synonyms such as plastic tableware for disposable tableware, and keep adjusting.
- Step 3: Use search operatorsThree common operators: quotes lock an exact phrase, a minus sign excludes a word, and site: restricts results to one domain. For example, searching "disposable tableware consultation" guarantees the phrase appears intact; adding -restaurant removes restaurant advertisements; typing site:gov.hk returns only government pages. Combined, the operators shrink millions of results to a few dozen within a few steps.
- Step 4: Evaluate the authority of the sourceLook first at who publishes the page: government departments, universities, professional bodies and mainstream newsrooms have editors and review processes; anonymous posts and unknown sites are risky. For example, for health information, a Department of Health page and a forwarded social media post differ in credibility by worlds; if the same content exists only as forwarded screenshots with no traceable origin, be highly alert.
- Step 5: Check accuracy, currency and purposeAccuracy means figures cite their sources and claims have evidence; currency means checking publication and update dates; purpose means asking whether the page informs, promotes or sells. For example, an article boasting "research proves" but naming no study, institution or year is untrustworthy; a fee table on a five-year-old page may once have been true yet be invalid today — always check the latest version.
- Step 6: Cross-check and verifyImportant conclusions must be confirmed against several independent sources; never trust one alone. For example, when a group chat claims "a certain food contains a harmful additive", the right response is to search official food-safety authorities and news reports and compare accounts; if only the same screenshot circulates while officials have no record, it is most likely a rumour — do not forward it or embellish it.
- Step 7: Use information ethicallyCite sources when quoting and respect copyright; copying word for word without acknowledgement is plagiarism, and schoolwork is bound by the same rule. For example, a report citing government statistics should name the institution, the document title and the year; reposting images requires confirming permission. Verify before forwarding and refuse to amplify rumours — information literacy lived out in daily life.
5Worked example Example
A message is going viral in a class group: "Hong Kong is about to ban all disposable plastic tableware, effective next month." Some classmates believe it and are ready to forward it. Using search operators and evaluation criteria, design a complete verification workflow for the claim.
- Extract keywords and lock the phrase: pull out "disposable plastic tableware" and "ban", search "disposable plastic tableware" in quotes for an exact match, and add Hong Kong to narrow the region.
- Restrict to official sources: type site:gov.hk disposable plastic tableware to search government pages only; check the Environment and Ecology Bureau and the Environmental Protection Department press releases for any announcement and its actual effective date.
- Exclude noise and trace the origin: use a minus sign to remove irrelevant results such as restaurant ads, then trace when and where the message first appeared; it turns out to be a collage of a consultation paper and old news from years ago, not a new decision taking effect next month.
- Cross-check and conclude: compare official releases and mainstream news — only a phased control timetable exists, with no "total ban next month"; the message is exaggerated and false. Do not forward it, and clarify for classmates.
- Answer: The verification has four steps: first, quote the key phrase "disposable plastic tableware" for exact matching; second, restrict to government sources with site:gov.hk and read the official releases' actual wording and dates; third, exclude noise with a minus sign and trace the origin, finding old material repackaged; fourth, cross-check several independent sources and confirm that "total ban next month" is not fact. Conclusion: the message is exaggerated and false — do not forward it, and clarify for others. The workflow demonstrates the full cycle of information literacy: search, evaluate, verify, handle responsibly.
6Common mistakes Mistakes
7Quick check Quick check
Q1What are the main stages of information literacy?
Q2In the search "solid waste charging", what does the use of quotation marks do?
Q3Which operator restricts a search to pages on government websites?
Q4What are the four main criteria for evaluating the reliability of a web page?
Q5You receive a viral message. List two correct steps for handling it.
8Recap Recap
- Four stages of information literacy: recognise needs, search effectively, evaluate critically, use ethically
- Keywords must be precise; quotes lock phrases, minus signs exclude, site: restricts the domain
- Evaluation criteria: authority, accuracy, currency, purpose
- Cross-check important information against several independent sources; never trust one alone
- Cite sources, respect copyright, verify before sharing — never amplify rumours