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Math & Science: Getting Started

Keyword Search

Always a good way to start looking for information 

You can use book subject headings to find additional resources on the same topic

Thesaurus - browse for more subject terms


AND (limits search -fewer results)

OR (expands search)

NOT (keeps a word from appearing in results)


Natural Sciences

Environmental Science  ecosystem  niche  sustainability 

Life Sciences

Bioscience  Natural Science  abiotic  biogenesis 


Hydrology  algorithms  substructures  calibration

Information Technology 

Cybersecurity  programming   analyze  SEO 

SEM (Science, Engineering, Math) 

Anhydrous  catalyst  aerodynamics   deformation 

Search Tips

  • Use and combine keywords and phrases
  • Use Truncation (*) for root words
  • use broader terms
  • use boolean terms (AND,OR,NOT)
  • Use tabs or search suggestions to find new terms
  • Keep It Simple
  • Gradually add search terms
  • Use words that websites would use (ex: I need to write a resume - Resume Help OR Resume Tips)
  • Use important words only (instead of a sentence - try keywords)
  • Want the latest - can limit by search by time (under Tools on google) 

Evaluating Sources: The CRAAP test

CRAAP = Currency, Relevance, Authority, Accuracy, and Purpose. 

Currency: the timeliness of the information

  • When was the information published or posted?
  • Has the information been revised or updated?  

Relevance: the importance of the information for your needs

  • Does the information relate to your topic or answer your question?
  • Who is the intended audience?

Authority: the source of the information

  • Who is the author/publisher/source/sponsor?
  • What are the author's qualifications /credentials to write on the topic?
  • Does the URL reveal anything about the author or source?
    •  examples:
      • .com (commercial), .edu (educational), .gov (U.S. government)
      • .org (nonprofit organization), or
      • .net (network)

Accuracy: the reliability, truthfulness, and correctness of the content

  • Is the information supported by evidence?
  • Has the information been reviewed or refereed?
  • Are there spelling, grammar, or other typographical errors?

Purpose: the reason the information exists

  • What is the purpose of the information? to inform? teach? sell? entertain? persuade?
  • Is the information fact? opinion? propaganda? objective and impartial?
  • Are there political, ideological, cultural, religious, institutional, or personal biases?
Oglala Lakota College Woksape Tipi Library Physical Address: 3 Mile Creek Rd Kyle, SD 57752 Mailing Address: PO Box 310 Kyle, SD 57752 Phone: 1-(605)-455-6069