Blackboard requires you to allow pop-ups and Flash to work properly.
By default, Chrome will notify you when a pop-up is blocks and give you an option to see it. To turn off pop-up blocker, follow these instructions:
If your INTERACTIVE LESSON doesn't work, it may be that it requires Flash. Chrome and Firefox are phasing out support of Flash. You may be able to "approve" the site you're working on for your browser, or you may try Internet Explorer or some older browser.