When I was in high school, there was nothing I hated more
than math. And in math class, there was nothing I hated more than showing my
work. It felt like a tedious chore with for no real purpose—a hoop somebody
wanted me to jump through. Math was not open to poetic interpretation; the
answer was either right or wrong. And no one ever offered me partial credit for
getting an answer partially correct, or for demonstrating an interesting, if
flawed, process. As far as I could tell, nobody even looked at my work. So why did I have to show it?
Today, if my high-school aged son is to be believed, the
situation doesn’t seem much improved. And that’s a shame. The Common Core State
Standards in mathematics--and the new math standards in many non-CCSS states—make
clear that reasoning, arguing, and critiquing are vital skills within mathematics,
and that teachers should be instilling in students a devotion to precision and perseverance.
None of those mathematical habits
of mind reveal themselves in the calculation sitting to the right of an
equal sign and a question mark. They reveal themselves in the process—in the work
a student does along the way to an answer. There are real and strong reasons to
show
your work. But if a teacher doesn’t understand those reasons and make use
of them, the practice can easily remain an exercise in hoop-jumping.
As Elizabeth Green explains in her excellent book, Building
a Better Teacher, the right answer is often the least interesting piece of
data available in a classroom. It is the wrong answers that give teachers real
information about how students are thinking and where they may be going astray.
And while a seasoned veteran may be able to intuit a problem from nothing more
than a final answer, most of us will have an easier time understanding what’s
going on by making the student’s thought process visible. In written
assignments, that’s precisely where have students show their work is important.
What about in the heat of a class discussion? Students can
show their work here, as well, by talking about their process. Asking “what did
you do?” is far more valuable (and interesting) than asking “what did you get?” It allows the class to explore multiple
problem-solving strategies and assess what works and what doesn’t. It helps
students become comfortable and fluent in “talking math.” And it can make error
an interesting topic of
conversation rather than something to be embarrassed about and try to hide
from.
There’s a lot of talk about Growth Mindset in the education
world. Well, a vital component of Growth Mindset is the willingness to fail,
and try, and fail again—the understanding that failure is a natural
part of the process of learning, a necessary step on the way to success.
Athletes understand this perfectly well. A baseball player with a batting
average of .300 is considered pretty good; a player who bats .400 is considered
outstanding. Outstanding—with a 40% success rate! In basketball, perhaps the
greatest player of my lifetime, Michael
Jordan, said this: “I’ve missed more
than 9,000 shots in my career. I’ve lost almost 300 games. Twenty-six times, I’ve
been trusted to take the game-winning shot, and missed. I’ve failed over and
over and over again in my life. And that is why I succeed.” He doesn’t say that he succeeded in spite of his failures; he says he succeeded because of them. Because he was willing to put himself out there,
and make a mistake, and learn from the mistake, and press on.
We need to find ways to model this more positive view of
failure for our students. Instead of focusing solely on end-results, we need to
show students the long road it took to reach that goal. How many drafts did it
take for an author to reach the final manuscript? How many publishers rejected
the book before it was accepted? How many experiments did the inventor go
through before hitting on the right combination of ingredients? What challenges
and setbacks did a historical figure endure before doing the great work for
which they are remembered?
And what about us? Are we willing to model failure personally in front of our students? Can
we admit to them when we’re wrong, or when we don’t know the answer, or when an
activity we planned didn’t go as well as we had hoped? Can we show them that
there’s no shame in falling down, as long as we get back up again, brush the
dust off ourselves, and push on?