Israel Kleiner (mathematician) Quote

Can we not at least have a better appreciation of students' difficulties... having witnessed mathe-maticians of the first rank make mistakes, "prove" erroneous theorems, and often come to the right conclusions for insufficient or invalid reasons?


Thinking the Unthinkable: The Story of Complex Numbers (with a Moral), Mathematics Teacher, October 1988


Can we not at least have a better appreciation of students' difficulties... having witnessed mathe-maticians of the first rank make mistakes, prove...

Can we not at least have a better appreciation of students' difficulties... having witnessed mathe-maticians of the first rank make mistakes, prove...

Can we not at least have a better appreciation of students' difficulties... having witnessed mathe-maticians of the first rank make mistakes, prove...

Can we not at least have a better appreciation of students' difficulties... having witnessed mathe-maticians of the first rank make mistakes, prove...