Hi Sandra,
We have physical videos (dvd and VHS) and a streaming media database that should be of help to you.
To locate VHS and DVDs, click on the Library Catalog on the library homepage. Click on the Advanced Search.
In the search box, enter your keywords ( biology or whatever you wish.
From the limiters, select Document Type and then media collection.

The results will be videos.
To use Films on Demand, click on the Database link and then "F" and then Films On Demand.
Search by topic( Biology) on the front page or by keyword in the search box. You can search for complete title, or segments of full titles. Films on Demand allow you to create playlists with various segments of videos.

For more help or information, come in and speak with a librarian.
Best,
Marsha