|
1
|
|
|
|
QA11
.H8
|
53 interesting ways to teach mathematics/Ruth Hubbard
|
Bristol, [ United Kingdom ] : Technical and Educational Services Ltd. , 1991
|
Hubbard, Ruth
|
094788565x
|
99073
|
|
2
|
|
|
|
QA11.2
.H8
|
53 ways to ask questions in mathematics and statistics/Ruth Hubbard
|
Bristol, [ United Kingdom ] : Technical and Educational Services Ltd. , 1995
|
Hubbard, Ruth
|
0947885625
|
100871
|