The girls building robots in their garage
14 May 2017 Last updated at 14:07 BST
If you've got a garage at home, what does it get used for? Storing junk? Keeping the car warm? Doing DIY?
Well Martin's been to meet two school pupils, Beth and Emily, who've been using their coding skills to create something very special in their garage - Roy the robot.
They built Roy from scratch and have just come back from America where Roy competed at the Robotics World Championships. They were one of the youngest teams there, up against 500 other robots from around the world.
They're back in the UK so Martin went to investigate what their robot is all about....