Rotten Richie and the Ultimate Dare

Category, picture books about hockey. Rotten Richie and the Ultimate Dare is by Patricia Polacco (a bunch of parents just nodded in recognition) and combines quarreling siblings (relevant to my family) and hockey (of interest to my family) with Polacco's characteristically appealing art and quality prose. Trisha and her brother Richie dare each other to try each other's sports - Trisha suits up for one of Richie's hockey games and Richie joins her ballet recital. As you might expect they both end up with an appreciation for the other sport, make valuable contributions, feel stronger in their own sport from the experience, reach a heartwarming truce, etc, plus my kids were fascinated that hockey players in the 50s (when the book is set) didn't wear helmets.