Set in the palace of a powerful Chinese warlord, Chuan and his friend Jing Jing, the puppet master's daughter, devise a plan to save the palace from destruction in the face of their enemy's invading army. Together, they use their mathematical and critical thinking skills to construct three kites which they use at nighttime to frighten off the invading army. In the construction process, they use nonstandard units of measurement and multiplication by an array, which illustrates the relationship to area. A historical note explains the importance of kites in Chinese culture and instructions for making a kite are included at the end of the story. Fifth in the Warlord¿s Series, this story of friendship and teamwork incorporates ancient Chinese culture and traditions with important mathematical concepts.--Ministry of Education website.

Mathematical grade 4 (2007).