Thank you, that link to Slader is awesome!
Just by happenstance the textbook we chose for Geology is also by Pearson/Savvas and its chapter quizzes are only online, so I'm compelled to navigate the publisher's bureaucratic maze. I'll post if I get it figured out.
A discussion on the High School forum referenced labs from Biology Corner. So I'll compare those labs to Home Biology Experiments and to the labs that go with the Miller Levine text book. The availability of required supplies will obviously factor in ... and I keep reminding myself this is only 8th grade.