I have to admit, this MEL Physics box was probably not my favorite. Not only could I not get the LED to light up, but also the motor didn’t run as it should have. Since those could both very well be my fault, I won’t let that affect my judgment too much, but I was disappointed there was no bonus experiment this month like there usually is, and in the fact that I had to provide the batteries. I just feel like at $34.90, batteries should be included! This could definitely just be a personal opinion though. Otherwise, the box still had a lot to offer in that it was well organized, the way the experiments built upon one another was logical and the materials seemed to be high-quality. Overall, it was another great educational experience, but there were just a few different aspects that kept this from being one of their better boxes!