Development of calculation abilities in young childrenSusan Cohen Levine; Nancy C. Jordan; Janellen Huttenlocher · 1992

Differential calculation abilities in young children from middle- and low-income families.Jordan, Nancy C.; Huttenlocher, Janellen; Levine, Susan C. · 1992

Development of calculation abilities in middle- and low-income children after formal instruction in schoolNancy C. Jordan; Susan Cohen Levine; Janellen Huttenlocher · 1994

Assessing early arithmetic abilities: Effects of verbal and nonverbal response types on the calculation performance of middle-and low-income childrenNancy C. Jordan; Janellen Huttenlocher; Susan Cohen Levine · 1994