Battle of the Boards: Bob and the team are building a skate park for the Spring City Rockets, as they plan to enter an online video competition for action sports. After Leo fibs about his masterful skateboarding abilities, he and Dizzy compete for the extra spot on the Rockets' team. An inexperienced Leo almost collides with the Machines and prompts Two-Tonne to back into the bowl and deposit a torrent of cement into the skate park. The team rallies together and sculpts the cement into a new jump. Dizzy's talent earns her a place in the Rockets' video and they win the online competition. Learning Goals: To observe motion, pushing the skate board, and gravitational pull. To see that learning most new things takes practice. To see the value of telling the truth and not exaggerating. Bob and the Masked Biker: Skye Sampson is hosting a beach motocross race and has appointed Bob and the team to build the course. But not only is Bob creating the course, he plans to race on it, too. The Machines get wrapped into the hype surrounding the race and are determined to hold one of their own. Using the finished course, they hold an unofficial race that ultimately destroys the site. The team pulls together, works through the night, and the course is ready the next morning. Bob competes in the race and finishes second place to a mysterious masked biker-Wendy! Learning Goals: To show that machines need to be maintained for optimal performance. To take responsibility and fix mistakes whenever possible. To observe competition highlighting fairness and good sportsmanship.