I'm currently teaching with Keller and Russell's Learn to Read Latin. I have a vague memory that there exists, or used to exist, a website with drills and exercises that are specifically keyed to the chapters of that textbook, but if so, I can't seem to find it again. (My students are doing the drills in the workbook but it would be useful to them to have online drills as well.) Does anyone know if such a site exists and where it can be found?
Perhaps this is the site you are remembering?
It has a lot of "noise," but it has interactive games for the different chapters.