We already know how to poke a balloon without popping it, but this time we are making a hole in a bubble. We have prepared a bubble solution by mixing water and washing up liquid, made a frame from a wire and tied a piece of a thread in a loop. Then we dipped the thread in the bubble solution and put it on top of the bubble. When we popped the bubble inside the loop, it made the thread to form a perfect circle with a hole inside. Pretty cool! This hole can be moved across the bubble surface, and most importantly, children can put their hands inside it.