I am going to get the students in groups of 3 and pass out different sheets of paper with "Robots" on them and have them decide which of them are considered robots and why? When we discussed what a "computer" was at the beginning of the year we got very technical and it became a debate in my room so I think they will be all over this. So each group will cut out what they consider to be a robot and what is not and tape it up to the board either to the robot side of the board or not a robot side. We will then vote as a class if everything is on the right side and discuss why and what makes them robots. Then lead us to what the definition of robot is versus a machine.