Estimation and mental computation : 1986 yearbook /
Estimation and mental computation : 1986 yearbook /
Harold L. Shoen, 1986 yearbook editor ; Marilyn J. Zweng, general yearbook editor.
- Reston, Va. : National Council of Teachers of Mathematics, c1986.
- viii, 248 p. : ill.
- Yearbook / National Council of Teachers of Mathematics ; 1986 .
- Yearbook (National Council of Teachers of Mathematics) ; 1986. .
0873532260
Problem solving.
Estimation theory.
Mental arithmetic
QA1 QA63 / .N3 1986
510 s 511/.4�19
0873532260
Problem solving.
Estimation theory.
Mental arithmetic
QA1 QA63 / .N3 1986
510 s 511/.4�19