Fill in the Blanks The components of MartyOnline version This activity will evaluate your understanding of Marty's components and what they do. by Paul Nicholson 1 personality character Form Humanoid is Marty's and ! 2 turn wiggle ball walk sidestep kick a dance The unique walking mechanism allows Marty to , , , , , and . 3 legs arms eyes The nine metal - geared position sensors are smart servo motors in the , , and . 4 screenless foot color infrared The sensors are and sensors for coding . 5 eyebrows expressed range Marty's move , giving him a of emotions . 6 quality robust moulded plastic ready classroom parts Marty has that make him - , , and built to last . 7 sensors tilt acceleration The and are in Marty's head . 8 rechargeable 2 play 3 hours battery Marty runs off a that allows him to for - when fully charged . 9 speaker sounds talk play Marty uses a to and .