First, you have to make a plan:

Then divide tasks and start preparing materials:

After that you can stick them together:

That's not finished yet! We also painted it.

This robot can do the homeworks for you. Insert your homework in the box, it will tell you if it's good (green arm) or bad (red arm). If it's good, it will give it back to you. If it's not, the arms inside the robot will do the homework for you! You can see it's work opening the door behind the robot.