Directions: click mouse in numbered slot and type part name (you can move between slots by pressing TAB key). When you are finished, click the Check My Answers button at the bottom of the page. Any wrong answers will be erased. Enter the correct part name in the erased slots and click the Check My Answers button again. If you are not sure how to spell a part name, look at the Word List on this page. CLICK HERE for an illustration with named parts for help.