Abstract
Four 3rd-grade students were individually interviewed and each interview was videotaped
for subsequent analysis. The interviews involved presenting addition and subtraction tasks
involving 1- and 2-digit numbers, and early multiplication and division tasks. Detailed
descriptions of students’ strategies are provided. Three of the students all used just one kind
of strategy, that is counting by ones and using fingers to keep track. The fourth student used
a range of strategies including adding through ten and using a known fact.
Robert (Bob) Wright