Instruct: Classify Amazon reviews into positive or negative sentiment
Query: I'm a math professor this calculator is no good

I'm not sure why this has such great ratings, but there are much better calculators for the price. As a Math professor at a college do not buy this calculator. There reasons are listed below.1. there are much better calcs for cheaper like the TI -30,2. It doesn't show you your work as you go. This is old stuff and now a days calculator can view what you are plugging in as you go. This is the main reason you con't want to buy this calc3. It's strictly solar so there is not battery backup and it will lose power in low lighting