rational number

n.

有理数；

Rational number
Rational number
Rational number
Rational number, ratio, and proportion
Rational number concepts
Rational-number concepts
Parts and 'holes': gaps in rational number sense among children with vs. without mathematical learning disabilities.
Order and Equivalence of Rational Number: a Clinical Teaching Experiment
Inhibiting the natural number bias in rational number tasks
Equipartitioning/splitting as a foundation of rational number reasoning using learning trajectories
Partitioning: The Emergence of Rational Number Ideas in Young Children
The rational number construct: Its elements and mechanisms
Curriculum implications of research on the learning, teaching and assessing of rational number concepts