"Dodgeball MR" is an innovative interactive sport that combines STEAM (Science, Technology, Engineering, Arts, and Mathematics) education with Mixed Reality (MR) technology. It is particularly suitable for seniors and their grandchildren to participate together, allowing everyone to compete and collaborate in a safe and enjoyable game. This activity enhances hand-eye coordination, stimulates brain activity, and provides the joy of exercise. It's not only a great way to promote health but also the perfect opportunity to strengthen family bonds and create cherished memories. Let grandparents and grandchildren compete on the same stage and enjoy a fun, healthy new lifestyle!