Children hold the toy in both hands and attempt to keep the inner ball moving along the track, improving their hand-eye coordination and balance in the process.
玩時只要兩手握球，運用手腕的靈巧性，讓小球在圓盤的軌道上持續滾動，在遊戲中訓練兒童的手眼協調與平衡感。