Without having been taught a method for solving subtraction problems that require regrouping, a first-grader applies his natural knowledge of numbers and operations to solve problems containing two- and three-digit numbers. This conversation features his reasoning as he formulates an explanation of the computational strategy he developed.
Rachael M. Welder
Janet Sharp and Rachael M. Welder
Students notoriously struggle with division of fractions in 5 key areas. Hear what those 5 areas are and how recommendations address the limitations.