
Once there was a boy named Max. He was three years old and he loved to put things together. 
One day, he found a box with funny looking parts in it. He took out one piece and saw it had a knob on it. He thought maybe it would be fun to put it together.
Max got some tools and began to put the piece together. He made sure each part fit together nice and snug. He put the knob on last and heard a clicking sound. 
Max was feeling proud of himself and wanted to see how fast the piece worked. He quickly put the piece on the floor and gave it a push. It began to move fast across the floor. Max was very happy. 
Max had put the piece together perfectly, and it worked just as he had hoped. He kept playing with it all day, until it was time for a nap. And he never forgot how fun it was to put the piece together with the knob.
