An octacube sculpture is like a big toy that someone made out of many tiny toys. It is made up of eight small cubes that have been put together in a special way to make one big cube. Each of the small cubes has six sides and when they are put together, they all fit perfectly so that the octacube looks like a giant, solid cube that you can see through.
The octacube sculpture is special because it is made using math and geometry. The way that the small cubes are put together is based on a special kind of pattern called a tessellation. This means that the small cubes are arranged in a repeating pattern that fits perfectly together without any gaps or overlaps.
The artist who made the octacube sculpture had to use a lot of patience and precision to put all the small cubes together in the right way. They probably used special tools and techniques to make sure that everything fit together perfectly. Once they were done, they ended up with a beautiful and unique sculpture that people can look at and admire.