In one of the newest Lego sets under development, the bumps that hold the toys together have a second purpose: They also help children learn Braille. The series of dots on each brick represents a different letter of the Braille alphabet, the numbers zero through nine, and a handful of math symbols. Braille can be incredibly difficult to learn, but by intertwining them with the Lego bricks, kids can play without even realizing that they are learning to read Braille—adding fun to an otherwise challenging task. The bricks, which are compatible with other Lego toys, are also printed with visual letters or numbers, so sighted family members and students can also learn Braille. The bricks, which will be available in several languages, will launch in 2020 and will be given to partner organizations who help blind children.