a picture of a magazine with waves on it

Prompt 1: showcases a man standing in front of a whiteboard with a list of instructions. he then proceeds to draw a graph on the board. the graph is then converted into a 3d graph, and the man proceeds to explain the graph. is a tutorial on how to create a 3d graph using a whiteboard and instructions.

Prompt 2: showcases a demonstration on how to build a water still, which is used to purify water. the man explains the different parts of the still and how they work together to purify water. he also provides instructions on how to build the still and how to use it. also includes a demonstration of the still in action, purifying water. additionally, a blue screen with the word "still" written on it.