Building mathematical concepts:
Spencer, Peter Lincon
Building mathematical concepts: in elementary school / Peter Lincoln Spencer, Marguerite Brydegaard - New York : Henry Holt, 1952 - ix, 372 p. : ill. photos; 21 cm.
Includes index
Matemáticas --Conceptos
QA 107 S64 1952
Building mathematical concepts: in elementary school / Peter Lincoln Spencer, Marguerite Brydegaard - New York : Henry Holt, 1952 - ix, 372 p. : ill. photos; 21 cm.
Includes index
Matemáticas --Conceptos
QA 107 S64 1952