Answer: About the Distance, Rate, and Time—Walking Home Illustration: This Illustration’s student
dialogue shows the conversation among three students who are trying to figure out when a pair
of siblings will meet as they walk home from school, given different starting times and the
amount of time it usually takes each to complete the journey. After using several approaches,
students finally solve the problem and are left wondering why their solution is independent of the
distance between the school and house.