53 interesting ways to teach mathematics/
Hubbard, Ruth.
53 interesting ways to teach mathematics/ Ruth Hubbard. - Bristol : Technical and Educational Services, 1991, ©1990. - 150 pages : 1 portrait ; 22 cm
0947885609
QA11 / HUB 1990
53 interesting ways to teach mathematics/ Ruth Hubbard. - Bristol : Technical and Educational Services, 1991, ©1990. - 150 pages : 1 portrait ; 22 cm
0947885609
QA11 / HUB 1990