Teaching and learning mathematics : pre-kindergarten through middle school /

od Sheffield, Linda Jensen.
Wydane 2005

Extending the challenge in mathematics : developing mathematical promise in K-8 students /

od Sheffield, Linda Jensen, 1949- .
Wydane 2003

Teaching mathematics to elementary school children : a foundation for the future /

od Cruikshank, Douglas E., 1941- .
Wydane 1988