If you are using the Firefox browser, there is a solution which will allow you or your students to download all the files in a Blackboard folder at once (without requiring access to the Blackboard Control Panel)
Instructors often post many files in folders in their Blackboard courses. For students, the usual way of downloading these files is by clicking the links one at a time. To speed up this process, there is a plug-in for the Firefox browser called "DownThemAll!" that will go through all the links on a page, let you check the ones you want, and download all of them at once.
This plugin works well with Blackboard.
Using your Firefox browser, get the plug-in here:
Here is a picture of "DownThemAll!" in use:
Note: For the Blackboard site, we recommend setting DownThemAll to download each file sequentially. Do to so, in Firefox, go to Tools > DownThemAll > Preferences and set "Max contemporary downloads" to 1. (Thanks to Colin for this tip)
For more instructions on how to use "DownThemAll!" see the developer's website here: