3. Location and Access – LIS Resources & CRAAP & OPCVL.

All about … locating sources, accessing information and evaluating resources.
(Scroll down for CRAAP & OPCVL.)

From the Big6 Skills PDF:

3. Location and Access
3.1 Locate sources (intellectually and physically)
3.2 Find information within sources
o Where can I find these sources?
o Where can I find the information in the source?

Library catalog – Click HERE for the Library catalog to see what books we have and also some recommended websites.

LIS Research Portal – Take a look the resources we subscribe to. Click HERE to go to the LIS Research Portal. See your Librarian or your Teacher for the password for this page.

WikipediaThe LibGuide Wikipedia 101 teaches you how to use Wikipedia as an effective research tool and a stepping stone rather than your sole source of information. Make time for:

Advanced Searching

Think you’re pretty good at searching, that must mean you search using advanced search. Click HERE for a short two minute video on advanced searching.

Click HERE to go to Google’s Advanced Search for websites.

Click HERE to go to Google’s Advance Search for images.

Online Sources

There are videos and quizzes about internet searches and online sources in BrainPOP. The login information can be found in the LIS Research Portal page.

Credible sources count!

Click HERE for an interactive 10 minute tutorial on how to evaluate if a web source is credible or not.

Want to evaluate your website? Then click on this website evaluator.

Evaluating resources

There are lots of methods for checking to if a source is any good. More information on two methods (CRAAP test & OPVL) can be found below.


So you’ve found some resources, use the CRAAP test to see if they are any good!

C – Currency – The timeliness of the information.

R – Relevance – The importance of the information for your needs.

A – Authority – The source of the information.

A – Accuracy – The reliability, truthfulness and correctness of the content. 

P – Purpose – The reason the information exists. 

Click HERE for a list of questions that will help you decide if the resources you have found are the best resources you can use.


OPCVL (Origin, Purpose, Content, Value and Limitation) is used to analyze historical documents.

Click HERE for a slideplayer presentation on OPCVL.

Click HERE for a comprehensive chart listing all the different types of historical documents and key questions you need to ask to determine if it’s a good source for you to use.