a couple of street signs that are lit up in the dark

Prompt 1: starts with two symbols flashing, and then a person solving a problem on a board. then shows various mathematical symbols flashing, and another person solving the same problem on a different board. then shows two people solving the same problem on two different boards. finally, three people solving the same problem on three different boards. overall, showcases the process of solving a problem on a board using mathematical symbols and various boards.

Prompt 2: a white screen with a black z and a white screen with a black z and a white screen with a black z. also includes a white screen with a black z and a white screen with a black z.