Remember that game from the first day where you could "roll an LED" around the grid on the Micro:Bit? Well, it's time for you to write that program yourselves.  I've done the algorithm for rolling the LED along the X-axis; you will need to do the code yourselves. When you have that working, roll the LED up and down on the Y-axis, then combine the two to roll anywhere.  Work with your partner if possible. Can you think of a way to work together without leaving home? Don't forget that you can write to me if you need help. Next time, we'll add a target LED and turn this into a game.