Ages and Timelines: Subtraction on the Open Number Line (Contexts for Learning Mathematics, Grades K-3: Investigating Number Sense, Addition, and Subtraction)
Description
Ages and Timelines: Subtraction on the Open Number Line is one of eight units in the Contexts for Learning Mathematics' Investigating Number Sense, Addition, and Subtraction (K - 3) This unit begins with the story of Carlos, an eight-year-old boy who is fascinated by his great-grandfather's thick, beautiful silver hair. His great-grandfather lives in Puerto Rico and Carlos is preparing to meet him for the first time. Having only seen photos of him as a much younger man, Carlos wonders how old his great-grandfather is and how many years it will take before he might hav...
ISBN(s)
0325010145, 9780325010144
