Elmo, Rosita, and Chris are making a doggy obstacle course for Tango. They use boxes to make a doggy tunnel for Tango to run through and cones for Tango to zig zag around. They find a hula hoop that Tango could jump through, but it won't stand up. This is a problem! They wonder how to make the hoop stand up and have enough room for Tango to jump through. What if they put the hoop through the slats of two chairs? Let's try! It works. They didn't give up and made a great game for Tango to play.