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 character Form Humanoid personality is Marty's and ! 2 dance turn kick walk wiggle sidestep a ball The unique walking mechanism allows Marty to , , , , , and . 3 eyes legs arms 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 range eyebrows expressed Marty's move , giving him a of emotions . 6 plastic parts robust moulded classroom ready quality Marty has that make him - , , and built to last . 7 acceleration sensors tilt The and are in Marty's head . 8 hours 3 battery rechargeable 2 play Marty runs off a that allows him to for - when fully charged . 9 speaker play sounds talk Marty uses a to and .