There are 142 pieces: triangles, rectangles, circles, semicircles and dots.

In yellow, green, red, blue, pink, orange, purple, and whenever they are combined or overlapped, they form new colors and new shapes.

142 pieces, as in a game, changing place and position as we turn the pages: we look to one side and they were there, we look to the other and they have moved over there... Happening, in parallel and using the same pieces, are two stories: in one we subtract, in the other, we add; in one we deconstruct, in the other, it is time for construction.

They call it Trocoscope, and for those who don't know much about technology, we can simplify it by saying that it is a kaleidoscope, but the most advanced one: with colorful shapes inside, but with (even more) surprising capabilities.