Mathtoon Exponents

Today, my algebra I class worked on scientific notation.  After a video and guided practice, I had the students go on and do the first quiz under exponents as they are supposed to be fairly good at using exponents.  Unfortunately, the average score was about 5/10.  I think many of the students just put an answer to get done rather than really looking and trying. 
I do enjoy these apps because they give me a way of getting immediate feedback on student performance and behavior. In addition, it gives students a chance to practice taking computer based tests.  Their major state tests will be computer based and any practice I can give them will help.