You see, each of the three sections represents the three positions in a Braille cell (dots 1 and 4, 2 and 5, and 3 and 6). In other words, as you twist each of the sections, you create a different Braille letter or number. (Don't worry; it sounds much more complicated than it actually is.)
This pocket-sized braille-learning gadget intrigues children and adults alike. It's a great way to try your hand at creating and recognizing braille letters - using a self-contained device which has no loose parts to go missing. And not only is this braille cube an original way to give you some extra Braille practice, but it's bound to fascinate your friends the next time you're asked about what the Braille alphabet looks like!
(From the Hands-On Braille shelf.)