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 dance sidestep walk ball turn kick wiggle a The unique walking mechanism allows Marty to , , , , , and . 3 arms legs eyes The nine metal - geared position sensors are smart servo motors in the , , and . 4 color screenless infrared foot The sensors are and sensors for coding . 5 expressed eyebrows range Marty's move , giving him a of emotions . 6 robust plastic quality ready classroom parts moulded Marty has that make him - , , and built to last . 7 acceleration tilt sensors The and are in Marty's head . 8 play battery 3 hours 2 rechargeable Marty runs off a that allows him to for - when fully charged . 9 talk speaker sounds play Marty uses a to and .