Tricks and Shortcuts vs. Mathematics

The issue is not whether algebra should be taught in the eighth grade or later. The issue is not whether local schools should be able to make their own textbook adoption decisions. The issue is about how easily states make big changes based on flimsy research which asks the wrong questions, only to backtrack later because solutions that solve the wrong problem do not work. California reverted to phonics in 1995 after abandoning it for a faulty implementation of whole language based on research that answered some questions, but not the questions that matter.

The emphasis on algebra in the eighth grade is misplaced when even students with good math grades enter algebra weak in math concepts. I am working with an A student now who is solving for x in problems involving mixed numbers. She wrote these "computations:" 2 + ¼ = 2¼, 3 + (- ¾) = 3-¾, and -2 + ½ = -2½. Do you see the pattern? In her mind, numbers are disembodied entities with no real meaning. She thinks all she has to do is take out the plus sign and push the fraction up against the whole number.

These silly errors happen in an education system where children have been taught tricks and shortcuts since first grade. The problem is teachers call tricks and shortcuts "math," and when children do well on a test of tricks and shortcuts, they learn their good grade is proof they understand math. Actually the grade proves only that they can reliably implement tricks and shortcuts.

I have worked with children who have terrible math anxiety because they do not do well with the tricks and shortcuts. Some part of their mind has rejected the tricks and shortcuts as not making sense, so "math" does not make sense. If they ever get a chance to acquire true number sense, then they find out they are good at math after all.

Sometimes we reward unthinking compliance (as when kids memorize the tricks and shortcuts) and punish the thinkers for whom the tricks and shortcuts do not make mathematical sense.

American Education is NOT Failing....

...In fact, it accomplishes its hidden curriculum perfectly, according to Danjo1987, who hits several out of the park his first day up to bat on EdWeek forums. hllnwlz wound up the pitch and effectively makes many of the same points.

If you have been following this blog, you know that last year I am the "parent" (from the school's point of view) for a particular child who is now an eighth grader. My kids are grown; still it has been instructive to observe her schoolwork and communicate with a school as a savvy teacher/parent. I have been reminded once again that schools really do not like interacting with savvy parents. When schools say they want parent involvement, what they usually mean is they want parents to bake cupcakes once in a while and make sure the student does the homework everyday. More than that, and you are stigmatized as a "helicopter parent."

Overall, the girl's teachers seem to be competent;a couple strike me as excellent. There is one teacher I simply cannot fathom. On the midterm progress report, this teacher gave this straight-A student a citizenship grade of "N" for "excessive absences" during a medical leave. Upon her return to class, she took a "diagnostic" test and got a "D." This is the student's only grade for the class, and the grade teacher put on the progress report. (The other teachers gave her "I" for incomplete).

For the past five weeks, apparently this teacher has done nothing gradable in class. At the close of the term last Friday, there was only one grade in the online system the school uses: that "D." The student's grade on the report card? C-. I am about to intervene.

Meanwhile, in her other classes, she often brings home homework that astound me with the easiness and triviality of it. I see the kind of homework I used to get as a second or third grader. For example, she has to write a little essay about a short story they read in English class. The first assignment is to analyze the writing prompt, write down the verbs that tell what the student is to do, etc. In eighth grade? And the requirements for the regular notebook checks are beyond ridiculous, but the school feels if they do not force the students to organize, none of them will. Apparently, they did not learn how to collect and organize their work in elementary school. The only reason she writes both her first and last name on papers is because I insisted she write a complete heading on each paper whether the teacher required it or not. "But I am the only one with my name," she complained. Does not matter.

What I see is a disjointed and inconsistent system characterized by low expectations, even as the adults give inordinate emphasis to test scores.

Wrong Questions About Spreadsheet Math

Spreadsheets are a ubiquitous and necessary tool these days. Students need to learn spreadsheet math.

"Our children still spend hundreds of hours perfecting their ability to add, subtract, multiply, and divide fractions. And the pinnacle of math for most of our K-12 students remains the ability to solve quadratic equations. When was the last time you used any of these skills? When did you last multiply two three-digit numbers together on paper, add two improper fractions with unlike denominators, or solve a quadratic equation?"

These are the questions people asked when it came to calculator use, and they are still the wrong questions. Spreadsheet math will not replace the ability to actually understand math any more than calculators did.

When the National Council of Teachers of Mathematics (NCTM) recommended calculators for even the youngest students, they rhapsodized about about how calculators would revolutionize math teaching, using the same sort of language that idealizes the potential of spreadsheet math.

"By teaching our children spreadsheet math we enable them to solve ...fascinating problems, problems without a single right answer, problems that can be explored, problems that get our children thinking "out of the box."

And that was exactly the wrong-headed pie-in-the-sky rationale for recommending calculators. It sounds great but does not work in practice. The problem with math instruction is not whether we should be using calculators or spreadsheets. The problem is the lack of skilled math teachers. The problem is the continued reliance on teaching tricks and shortcuts instead of math. Like calculators, spreadsheets have a similar tendency to replace thinking.

Beginning in 2001, I researched the calculator fallacy extensively culminating in a 78-page report in 2010. Briefly, I found that the research NCTM insisted supported the use of calculator in the early grades did not exist.

I agree that students need to learn spreadsheets, but not as a substitute for learning math. Since our elementary teachers lack an ability to teach math for understanding, abundant experience with mechanical processes, though far from ideal, is pretty much the only way kids learn to tell an unreasonable answer from a reasonable one, and even then they are not very good at it.

Just last week, a friend's eighth grade daughter (A+ in math per last progress report) was sure that if $27.50 could buy 10 lbs of hamburger, then $55.00 would buy over 150 lbs because "I followed all the steps correctly." When I told her that obviously she had not, she argued that even the calculator agreed with her, so I must be the wrong one. Just yesterday she insisted that -3 + ½ = -3½ (by analogy to 2 + ½ = 2½). In her mind, all you have to do is get rid of the plus sign and shove the fraction up against the whole number. When these kinds of misconceptions plague even good students, no wonder students who are not as “good” have math anxiety. Deep down, the anxiety is related to an unspoken and unspeakable suspicion that math makes no sense. They are right. When math is turned into a system of tricks and shortcuts, it makes no sense.

Surprise! Kids Value Rote Learning...

Surprise! Kids Value Rote Learning...

...just not when they are the one expected to memorize knowledge. Have you ever had a child ask you a question that require a memorized fact to answer? It happened to me recently. We were listening to a CD of classical music that had no printed table of contents. With nearly every piece, the (junior high) child asked, “Who wrote that?” Luckily, I can google the answer. She became exasperated with my lack of certainty and my need to look up so many of the composers. She asked impatiently, “Didn't you have to study music history when you were in school?”

Me: Yes, I did.

Her: Then how come you don't know who wrote all these songs?

Me: Do you like history class?

Her: NO, I hate it.

Me: Why?

Her: Because we have to memorize so many dates and other trivia.

Me: I guess you will start applying more gusto to your memorization.

Her: Why would I do that?

Me: Because clearly you think that memorizing facts is an important part of your education.

Her: Nooo. Whatever gave you that idea?

Me: Because you think it was an important part of my education.

Her: I never said that!

Me: But you clearly expect me to remember music composers off the top of my head better than I do. How would I have learned that information in the first place, except by memorizing it as facts? And you expect me to still remember it? Don't you think you should hold yourself to the same expectation?

Her: Well, of course.

Me: So I guess you won't groan anymore when teachers expect you to memorize stuff.

Her: Who said I minded memorizing stuff?

Me: Whatever.

Her: Hey, that's my line.

In Case of Nothing to Do, Break Glass...

...and then sweep up broken glass.

Americans have hopes and ideals for public education. As David Sirota explains,

Here in the industrialized world’s most economically unequal nation, public education is still held up as the great equalizer — if not of outcome, then of opportunity. Schools are expected to be machines that overcome poverty, low wages, urban decay and budget cuts while somehow singlehandedly leveling the playing field for the next generation. And if they don’t fully level the playing field, they are at least supposed to act as a counter-force against both racial and economic inequality.

The American ideal is that public education is supposed to be not only the engine of the American Dream, but also the primary mechanism for overcoming the social-economic obstacles of birth. Meanwhile, public educators consistently cite the poverty of their students as the number one reason public education fails to perform its promise. So, public education is supposed to give poor students the tools they need to overcome poverty, but public education cannot give them these tools because the students are poor. Teachers say education reform proposals that fail to address poverty are doomed to fail. We are trapped in a vicious circle. In such an environment, no wonder policy-makers, most of whom lack education experience, feel pressured to do something---anything. Education policies thus tend to be a perpetual cycle of creating and cleaning up messes.

And no wonder. Policy makers lack expertise themselves, so they turn to advice from those who seem to have proper credentials. Who do they ask? Education professors. Sounds reasonable, but guess what? Many education professors lack significant in-the-trenches experience in the very places teachers must implement policies handed down from on high. American society does not trust teachers. The main reason for the lack of trust is the double-mindedness of society. Sometimes we consider teachers to be professionals, and then undermine their professional judgment when we consider them hired laborers subject to dismissal for insubordination. We steadfastly refuse to put teachers at the head of the policy table even though, as Nancy Flanagan puts it, the teachers know where the carts are.

If we want to invest in a highly skilled teaching force, perhaps it's time to stop positioning teachers as drop-in observers who should be grateful for the chance to "represent" their peers in important decision-making bodies...Teachers should be at the head of the table, calling the meeting. The more professional responsibilities we take off teachers' plates, to standardize and homogenize, the more teachers' professional judgment is weakened.

Teachers should not be the target of reform, but the drivers. Right now, teachers are lucky if they can stand outside the door and listen at the keyhole.

At the start of the Obama presidency, when the Department of Education had lots of openings, the administration solicited applications. Many teachers applied. It turned that the administration was only interested in perpetuating more of the same, not ushering the change we all hoped for. Any PhD, especially a well-published PhD, whether they have actual significant experience or not, trumped highly effective, veteran teachers every time. Perhaps the number one disappointment educators have with the Obama administration is the refusal to listen to real teachers. They do not listen because they do not trust. They do not trust because our present policies prevent recruitment from among the most academically able students.

Teaching is not a top job choice, but a last resort. I routinely ask my education students why they want to be teachers. The answers are underwhelming. My top two favorite answers because they indicate the status of teachers in America: “I flunked out of hotel management,” and “It is either teaching or the Army.” In such an environment, it is difficult for the American public to accord teachers the respect and esteem they enjoy in other countries. Meanwhile, administrators break the glass and expect teachers to clean up the mess.

Smart People (You and Me) are Stupid

A recent provocative article from the New Yorker begins:

Here’s a simple arithmetic question: A bat and ball cost a dollar and ten cents. The bat costs a dollar more than the ball. How much does the ball cost? The vast majority of people respond quickly and confidently, insisting the ball costs ten cents. This answer is both obvious and wrong. (The correct answer is five cents for the ball and a dollar and five cents for the bat.)

Or try this one:

West and his colleagues began by giving four hundred and eighty-two undergraduates a questionnaire featuring a variety of classic bias problems. Here’s a example: In a lake, there is a patch of lily pads. Every day, the patch doubles in size. If it takes 48 days for the patch to cover the entire lake, how long would it take for the patch to cover half of the lake? Your first response is probably to take a shortcut, and to divide the final answer by half. That leads you to twenty-four days. But that’s wrong. The correct solution is forty-seven days.

Our first mistake is to assume the human beings are rational. We should start from the premise that human beings are lazy (Yes, I am talking about you, and I am talking about me).

When people face an uncertain situation, they don’t carefully evaluate the information or look up relevant statistics. Instead, their decisions depend on a long list of mental shortcuts, which often lead them to make foolish decisions. These shortcuts aren’t a faster way of doing the math; they’re a way of skipping the math altogether. Asked about the bat and the ball, we forget our arithmetic lessons and instead default to the answer that requires the least mental effort.

My son calls it the “slacker syndrome.” The first step to learning to make good decisions is to humbly acknowledge that deep down we are all slackers. The smarter we are, the more stupidly we decide, like the super-smart guy who thinks everyone else is an idiot, but HE can time the stock market.

...smarter people are more vulnerable to these thinking errors...intelligence seems to make things worse. The scientists gave the students four measures of “cognitive sophistication.” As they report in the paper, all four of the measures showed positive correlations, “indicating that more cognitively sophisticated participants showed larger bias blind spots.”....

Okay, now that I know I am prone to this weakness (maybe the next time a job interviewer asks me about my number one weakness, I should admit that I am stupid....hmmm...maybe not), I can use this new-found self awareness to avoid it in the future. Think again.

...“people who were aware of their own biases were not better able to overcome them.”...

Even worse, we all tend to think of ourselves more highly than we ought.

Perhaps our most dangerous bias is that we naturally assume that everyone else is more susceptible to thinking errors, a tendency known as the “bias blind spot.” This “meta-bias” is rooted in our ability to spot systematic mistakes in the decisions of others—we excel at noticing the flaws of friends—and inability to spot those same mistakes in ourselves.

Wow, that sounds like a modern version of old advise from Jesus.

"Why do you look at the speck of sawdust in your brother's eye and pay no attention to the plank in your own eye?” (Matthew 7:4)

Education and self-awareness do not work because the meta-cognition is not available.

The problem with this introspective approach is that the driving forces behind biases—the root causes of our irrationality—are largely unconscious, which means they remain invisible to self-analysis and impermeable to intelligence.

Therefore we are doomed to live in a Zen paradox.

The more we attempt to know ourselves, the less we actually understand.

Nevertheless, I cannot help but feel education and self-awareness of our biases must be better than ignorance. At least, we can learn to be more tolerant and forgiving of others.

Parents In Contempt

As long as schools hold the public (who pays their bills, by the way) and parents in utter contempt, I seriously doubt that they will be able to build the relational trust necessary to academic achievement. Even worse is the contempt demonstrated toward those parents and members of the public who are education colleagues who might actually have a message worth listening to. I am just going to tell the story. A friend's child brought home a math assignment on perimeter and area. One of the problems was unsolvable as presented. It looked something like this (I do not have the actual diagram since child already turned her homework in):

The problem is unsolvable because there is not enough information. There is no way to know whether the angles that “look” 90 degrees are in fact 90 degrees. There is also no way to know whether the vertical segment that “looks” like it bisects the base in fact does so. The child made these points in class, but the teacher shot her down. So thinking I was being helpful to a young teacher, I sent her an email. After some brief introductory remarks, I wrote,

... the last problem of a recent homework assignment on perimeter and area had insufficient data to solve the problem.  One of the principles of geometric diagrams is that we never go by appearance.  We solve using givens and proven facts.  Since that particular diagram gave no indicators of equivalent length, bisection, 90-degree angles, etc, no conclusions could be drawn regarding the length of the side opposite the one measuring 15 units, or any other non-given length, without making unsubstantiated assumptions.  We are miseducating children if we teach them, even indirectly, bad thinking habits.  One of the purposes of math instruction is the logical and critical thinking skills it cultivates. And if we are as worried about high-stakes tests as we say we are, we will teach students to think properly.  A favorite trick of bubble tests is to lead the students down a primrose path of faulty assumptions. If you would like discuss ways to help students learn to think, please let me know.  I spent a lifetime teaching math, first to junior high and high school, and later, college students.

The teacher sent a reply that seemed quite understanding, but showed that she somehow missed the point. She replied,

I completely understand what you are saying in the email. I also concur with what you said, however, I did verbally tell the students that angles that appear to be right are. ..However, if the student drew it out on the grid paper, then that student could find an area for the figure they drew. We are at an entry level with these problems, and so I looked at how the student drew the problem out, and determined if their area and perimeter matched that drawing.

Am I the only one who found the reply disturbing? So I wrote back,

Thank you for your reply. "I did verbally tell the students that angles that appear to be right are."  Angles that appear to be right are most decidedly not right just because of appearance.  I really think that if the student's math level is lower, then it is all the more critical to precisely teach thinking skills.  Drawing on grid paper does not really help, because it only pushes students harder to make unwarranted assumptions.

I closed by repeating my offer to help. Then I got this curt dismissal:

Hi again, Thank you for your response, it seems that on this particular problem I did not satisfy your criterion and I am sorry to have let you down. Have a nice day.

Okay, so she really does not want any help, I guess. And apparently she is happy to miseducate kids. I figured I would just move on, until....the school's guidance counselor contacted me, and let me know that she considers my communication with the teacher inappropriate and unprofessional. Seriously? She even challenged my right to have any conversation with the teacher by pretending that I was discussing a student, not a math problem. Now when I was teaching, the only time I passed communications on to administration was if it contained a personal insult of some kind, of course, a very rare occasion. Maybe it is unfair to extrapolate from one experience, but I assure you, schools routinely show contempt for parents, the public, and even the education-savvy members of the public. We must be careful that we as teachers refrain from thinking we get to define the terms of parental involvement. I know plenty of teachers who actually resent fully involved parents if those parents dare to challenge the teacher or the school. Then teachers vilify the parent as a "helicopter parent" in an ad hominem attempt to dismiss with contempt the parent's concerns. A lot of schools want to limit parent involvement to conferences and making cupcakes.