On Luna's birthday, the whole family goes out for dim sum—but Luna and her brothers can't agree on how to share their pork buns fairly. How can three people divide up five buns? Should some siblings get more than others? Or should they cut the buns into smaller and smaller pieces so everyone gets the same amount? A playful exploration of division and fractions, featuring Chinese American characters and a cultural note. Storytelling Math celebrates children using math in their daily adventures as they play, build, and discover the world around them. Joyful stories and hands-on activities make it easy for kids and their grown-ups to explore everyday math together. Developed in collaboration with math experts at STEM education nonprofit TERC, under a grant from the Heising-Simons Foundation.