Hello I'm a 7th grade math teacher and I wanted to ask a favor from anyone in the community with a lesson I'm preparing about negative numbers. When you take off from a roof, and head up, the altitude on the screen reads zero, and then goes up positive. However, if you take off from the roof and fly down the numbers appear negative. I'm asking if anyone can send me a video of their screen showing these readings. So, a clip where it reads ZERO...and then reads a positive height, and then a negative height. Would be ideal if you could show both the position of the drone itself and the screen capture. Anyone available to do this? I live in a city and I don't have roof access to my building. The alarm would go off.