Which sentence would be best described as the thesis statement of this
article?
"But these concepts are not impossible, and I was firmly convinced that
every one of my students could learn the material if they worked hard
and long enough."
"After several more years of teaching, I came to the conclusion that what
we need in education is a much better understanding of students and
learning from a motivational perspective, from a psychological
perspective."
"What struck me was that IQ was not the only difference between my
best and my worst students."
"When the work came back, I calculated grades."