I am currently doing the 7th grade math over the s...

I am currently doing the 7th grade math over the summer, and I am truly disappointed. I was taking a test on algebraic equations when it then asked me to answer a question I was never taught! The site is difficult to navigate through, and when you answer tests there are sometimes essay questions. Usually, that is fine, but the essay questions aren't graded by the computer, but by the teacher. So it takes off points from your test score and lowers your grade!