Archive for the ‘Teachers’ Category

Watching the game film

Published by Dan Heath June 21st, 2010 in Fast Company, Path, Rider, Switch, Teachers, change, organizational

Our latest column for Fast Company is online. Here’s the lead:

Football coaches pore over game film to spot things they’d never see in real time. Check it out: When the defense blitzes, the free safety picks up the running back. So by picking off the safety, the middle of the field will be wide open for a screen pass. The value of this meticulous observation is intuitive in the sports world. After all, coaches get a week to review a 60-minute game. In the organizational world, where every day is game day, such analysis is less common. It’s unfortunate because studying the game film can yield unexpected insights. … [read more]

The power of clarity in creating change

Published by Dan Heath May 6th, 2010 in Concreteness, Rider, Switch, Teachers, Uncategorized, change, organizational

What looks like resistance is often a lack of clarity. Change accelerates when people understand — in specific, behavioral terms — how to reach their goals.

This theme emerged in some educational research cited by Amanda Ripley in her new Time piece called, “Should kids be bribed to do well in school?” The most successful “bribe” programs rewarded behaviors rather than grades. At first look, that seems odd. Why reward an “input” rather than the “output”? Well, here’s why:

The students [in New York City] were universally excited about the money, and they wanted to earn more. They just didn’t seem to know how. When researchers asked them how they could raise their scores, the kids mentioned test-taking strategies like reading the questions more carefully. But they didn’t talk about the substantive work that leads to learning. “No one said they were going to stay after class and talk to the teacher,” Fryer says. “Not one.”

We tend to assume that kids (and adults) know how to achieve success. If they don’t get there, it’s for lack of effort — or talent. Sometimes that’s true. But a lot of the time, people are just flying blind. John List, an economist at the University of Chicago, has noticed the disconnect in his own education experiments. He explains the problem to me this way: “I could ask you to solve a third-order linear partial differential equation,” he says. “A what?” I ask. “A third-order linear partial differential equation,” he says. “I could offer you a million dollars to solve it. And you can’t do it.” (He’s right. I can’t.) For some kids, doing better on a geometry test is like solving a third-order linear partial differential equation, no matter the incentive.

Situation problems vs. people problems

Published by Dan Heath February 21st, 2010 in Path, Switch, Teachers, change, organizational

In Switch, we point out that what looks like a “people problem” is often a “situation problem.” Here’s a great story from a 3rd-grader teacher who came to that conclusion when he noticed that another teacher’s students were doing a better job getting their assignments in on time…

Making math concrete

Published by Dan Heath February 8th, 2010 in Concreteness, Teachers

Steven Strogatz, an applied math prof at Cornell, has started a series on the NYT site to re-teach basic math from an adult perspective, with the goal to show “why it’s so enthralling.”

I love the second installment, which explores the way that using rocks in place of digits (i.e., six rocks rather than the number “6″) can provide unexpected insight on seemingly tough problems:

For example, instead of adding just two odd numbers together, suppose we add all the consecutive odd numbers, starting from 1:

1 + 3 = 4
1 + 3 + 5 = 9
1 + 3 + 5 + 7 = 16
1 + 3 + 5 + 7 + 9 = 25

The sums above, remarkably, always turn out to be perfect squares. (We saw 4 and 9 in the square patterns discussed earlier, and 16 = 4 × 4, and 25 = 5 × 5.) A quick check shows that this rule keeps working for larger and larger odd numbers; it apparently holds all the way out to infinity. But what possible connection could there be between odd numbers, with their ungainly appendages, and the classically symmetrical numbers that form squares? By arranging our rocks in the right way, we can make this surprising link seem obvious — the hallmark of an elegant proof.

The key is to recognize that odd numbers can make L-shapes, with their protuberances cast off into the corner. And when you stack successive L-shapes together, you get a square!

What makes a great teacher?

Published by Dan Heath January 29th, 2010 in Teachers, change, organizational

If you’re interested in teaching, this article by Amanda Ripley in The Atlantic is a must-read. For years, people have speculated about what makes a great teacher.

But now there is data. It has been gathered painstakingly by Teach For America for over a decade, and it covers hundreds of thousands of kids. TFA linked the test scores of students to their teachers, so that TFA can spot patterns in the data: Which teachers are causing big boosts in the kids’ scores–for instance, advancing them by three grade levels in one year? And what traits do those star teachers have in common?

Read the article for the full scoop. But here’s one bit that fascinated me. The data suggested a “profile” of a great teacher, and so naturally, in hiring new teachers, TFA wants to match that profile. So they’ve begun to build an “outcomes-based hiring” system, and in doing so, there were some surprises:

Once a model for outcomes-based hiring was built, it started churning out some humbling results. “I came into this with a bunch of theories,” says Monique Ayotte-Hoeltzel, who was then head of admissions. “I was proven wrong at least as many times as I was validated.”

Based on her own experience teaching in the Mississippi Delta, Ayotte-Hoeltzel was convinced, for example, that teachers with earlier experience working in poor neighborhoods were more effective. Wrong. An analysis of the data found no correlation.

For years, Teach for America also selected for something called “constant learning.” As Farr and others had noticed, great teachers tended to reflect on their performance and adapt accordingly. So people who tend to be self-aware might be a good bet. “It’s a perfectly reasonable hypothesis,” Ayotte-Hoeltzel says.

But in 2003, the admissions staff looked at the data and discovered that reflectiveness did not seem to matter either. Or more accurately, trying to predict reflectiveness in the hiring process did not work.

What did predict success, interestingly, was a history of perseverance—not just an attitude, but a track record. In the interview process, Teach for America now asks applicants to talk about overcoming challenges in their lives—and ranks their perseverance based on their answers.

Steven Farr, the guy who is leading this research at TFA, has a new book out — Teaching as Leadership — that suggests ways teachers can improve their effectiveness. I just ordered it from Amazon — can’t wait to check it out.

Google and memorization

Published by Dan Heath August 14th, 2008 in Concreteness, General, Teachers

Here’s Google CEO Schmidt, in response to a question about whether Google is “dumbing down” kids:

Kids use [Google] all the time because it’s a new way of learning. When I was growing up, in Virginia, they made me memorize the names of all the capitals of every county in the state. Completely useless information. So kids today are going from knowing everything to being able to search very quickly. The kids need to learn how to search because they’re going to have to search everywhere. They’re going to have search everywhere on devices that they carry with them.

Schmidt is right about the cult of memorization in schools. Most teachers do a great job of making lessons come alive, but when it comes time to measure what the students have learned, out come the standardized tests (thanks to state and federal requirements). And what’s easy to test in a multiple-choice format? Memorized information. So a student’s understanding of the Confederacy’s war strategy is funneled through questions like, “In what year did the battle of Gettysburg take place?”

There are (at least) two problems with that. First, if you’re the teacher, and you’re running low on class time, what are you going to teach — what’s on the test (i.e., factoids) or the “big-picture” stuff? Obviously you’ll teach to the test, because you’ve had it drilled into your head that the test scores are THE representation of your students’ learning in your class. If their test scores aren’t solid, you’re a bad teacher. So, yes, given a tradeoff, you and I both would teach the Gettysburg date.

Second, facts fade. Very very quickly. I propose a test to lots of school administrators who are in love with recall-type tests as an index of progress. Two weeks after your kids make solid scores, give them a surprise re-test. Same questions, same answers. And get ready to weep. All of us know and experience that our memories fade quickly — just see the forgetting curve literature — and yet we’ve designed assessments that seem to presume memories are permanent, like files stashed on a hard drive.

Google is the perfect real-world memory aid for students. It makes it easy to retrieve the factoids that will inevitably be lost from memory. It makes it so easy, in fact, that it’s foolish to obsess about teaching the factoids. If a student knows that there was a battle, during the Civil War, that represented a turning point, and she can articulate why, and she can discuss the factors that led up to the pivotal battle itself, isn’t that a picture of success? Would anyone think she’s less smart, or less aware of history, if she Googled the dates and the place names?

The Partition of Africa

Published by Dan Heath November 1st, 2007 in Concreteness, Emotion, General, Story, Teachers, Unexpectedness

Here’s a story we received from Peri Chinoda, an AP & Honors World History Teacher at Hume Fogg Magnet High School in Nashville:

Background Information: In 1885 the Chancellor of Germany, Otto Bismarck, convened a meeting attended by 13 European colonial powers including the USA and the Ottoman Empire. The Africans whose land was to be divided among the Europeans were not invited. The Europeans agreed on a number of things to ease colonization and prevent fighting among them.Â

Activity:Two or three students were asked to volunteer to bake cakes in the shape of the African continent. On the day of the lesson, I convened the conference with all other students representing European colonial powers and those who baked the cakes representing the Africans.

The “Europeans” gathered around arranged conference tables. The Africans were either sent outside the room or made to sit at the corner of the room.

The Europeans cut the cakes and divided the pieces among one another. The “Africans” who baked the cakes were not allowed to eat the cakes. They just watched other students eat the products/fruits of their labor.

After this activity: (a) The Europeans/students were to write down how they felt about eating the cakes while the people who baked the cakes were watching. The Africans/students were also to write how they felt when other students ate their cakes and they did not. (b) They were to read about the colonization of Africa, and write an essay reflecting on European Colonization of Africa.

Students talked about this experience for a long time. The lesson stuck on their minds for a long time. Even parents called the school expressing their appreciation for the experience their children went through to understand the process, effects and the moral issues involved in colonization.

Tammy Is a Quitter

Published by Dan Heath October 23rd, 2007 in Concreteness, Credibility, Curse of Knowledge, General, Simplicity, Story, Teachers

Here’s a story from Dave Rendall, who has a blog called the Freak Factor. (I love his post that argues that if you’re getting rejected, you’re doing something right.)

I hadn’t seen Tammy in almost a year, when she approached me in the hallway. I was there to teach an evening class for non-traditional students. She told me that her cohort was about to complete their last class and invited me to join the celebration. When I arrived, she was anxious to share some news.

Tammy had taken my course in Organizational Behavior the previous fall and one of the topics is change management. The classic model for this concept is Kurt Lewin’s force-field analysis, which helps managers to envision the driving forces pushing change and the restraining forces acting against change. By understanding and manipulating these forces, effective changes can be achieved. However, this is a relatively abstract concept and can become very complex in the context of an organization.

In order to make this concept stick, I use a few of the SUCCES principles from MTS. I start by keeping it simple. Instead of applying this model to an organization, I start by asking students to choose a meaningful change that they’ve been wanting to make in their own life, but haven’t started yet. Selecting a change that matters to them also creates an emotional link to the activity.

They write this change in the middle of a piece of paper and then I ask them why they want to make this change. These reasons are the driving forces and are listed on the left side of the paper on arrows pointing to the right. We then consider the barriers to making the change. These restraining forces are listed on the right side of the paper on arrows pointing left.

To make the activity more concrete, I try to physically illustrate the action of the two forces. I stand in front of the class with a chair and ask for a volunteer. The chair signifies the change, I am the driving forces and the volunteer is the restraining forces. I push the chair and the other student pushes back. The chair doesn’t move. It is “frozen.”

This illustrates the importance of “unfreezing,” which is the first part of Lewin’s change model. “Changing” occurs when driving forces are strengthened or added and when restraining forces are weakened or removed. Before explaining this, I ask the students how I can get the chair to move. The suggestions usually include the four options listed above. Without even reading the text, students can figure out how the process works in the physical world. In fact, during one class a student’s 10 year-old son was in the room. When I asked how to move the chair, the room was silent. The first person to respond was the young boy. He said, “Add more force!” He was exactly right and I was very pleased. I had made Lewin concrete and simple enough for a child to understand.

The activity is also credible because it offers a testable credential. Students are asked to assign numerical values to the strength of their driving and restraining forces. The cumulative scores for each set of forces shows why they haven’t made the change yet (not enough driving force and/or too much restraining force). We then work to increase driving forces and decrease restraining forces. The students always come up with creative ideas that they can apply to their own life. We discuss these as a class so students can see for themselves how it can work in their situation and those of their classmates.

I also share stories of how I’ve used this model to create change in my life. Each time I teach this concept, I choose a change that I want to make and work through the exercise along with the students. This creates a growing list of stories of success and failure, which brings us back to Tammy.

She wanted to start her own business. During the course of the exercise, she explained her driving and restraining forces. I asked if it was possible that her current job might also be a restraining force. Since she liked her job and was paid well, she did not have a lot of natural motivation to go out on her own. Even though she had a good job, it might actually be a barrier to achieving her change. I don’t recall her response at the time and I didn’t think much about it or hear anything from her until ten months later.

When I went to her classroom, she explained that she quit her job shortly after class and started her own business as a Spanish language interpreter. The business was even more successful than she anticipated and she was very happy. She credited the Lewin exercise for giving her the necessary insight and motivation to make a major change in her life. Needless to say, this is a story that I now share with classes to demonstrate the potential power of applying Lewin’s force-field analysis.

The lightning and the lottery

Published by Dan Heath October 19th, 2007 in Concreteness, Credibility, General, Teachers, Unexpectedness

I almost spit up my coffee when I got to the punchline on this one.

From Tony Pratt:

I’m a first year teacher (4th Grade) in the New Orleans Recovery School District. The one common thread that I’ve noticed between the lessons that have stuck was a relation to something the kids were familiar with or interested in. I frequently relate math lessons to the beloved Saints and create bizarre scenarios to maintain student interest. The best and most interesting story, however, came from a colleague. He was teaching the concept of probability and went into a long monologue about how small of a probability you have to win the lottery. He relayed the particularly sticky stat that it is more likely that you will be struck by lightning than win the lottery. The lesson was memorable enough that several students went home and told family members.Â
One student, Jarred, relayed his story, “I saw my uncle buying lottery tickets last night. I told him that he was more likely to be struck by lightning than he was to win the lottery and that buying lottery tickets was a bad idea because of probability.” Â
“What did he say?”
“He told me to get the F out of his face.”Â

Digital signal processing, made to stick

Published by Dan Heath October 17th, 2007 in Concreteness, Curse of Knowledge, General, Simplicity, Story, Teachers

[Preamble] If you ask someone to think of a sticky idea, a lot of times they’ll blurt out a slogan. “Wassssup!” “Just do it.” And, no question, these are sticky ideas. But because people tend to associate the notion of “stickiness” with things like slogans — i.e., short, punchy, cleverisms — they have a hard time imagining that stickiness could apply to really complex things. Stickiness is for marketers, not for engineers or scientists, or so goes the thinking.

Well, no. Chip and I may be largely to blame for this misperception — the word ’sticky’ we’ve embraced is itself clever and vaguely marketingish. But sticky just refers to an idea that was understood, remembered, and changed something (opinions, behaviors, values). So the fact that someone is a practicing nuclear scientist means that, at some point, nuclear science concepts stuck. Which in turn means that a nuclear science teacher found an artful way to communicate really hard concepts.

Because of this backstory, we were thrilled to get a note from Andrew Singer, who teaches a digital signal processing (DSP) course at the University of Illinois at Urbana-Champaign. Professor Singer and I ran across each other as a result of a talk I gave on campus. He had read Made to Stick and shared some changes he had made to his course curriculum as a result. And, as you’ll see, slogans are not his bag. He deals with really complex topics that must be communicated to really smart people. After Chip and I got his note, we exchanged “Wow!” emails with each other. [/Preamble]

I teach a course on digital signal processing to juniors and seniors in electrical engineering at the University of Illinois. This is a course that describes the mathematics and theory behind applications like digital modems, HDTVs and MP3 players. Basically, whenever “signals”, that is information they you care about, are “processed” using a computer, cell phone, or anything that samples or “digitizes” the signals of interest, digital signal processing is used.

Needless to say, the theory that I need to teach the students makes this largely a math course for upper level engineering students. However, as you know, motivating students to learn more mathematics for mathematics sake (especially for non-math majors) is no easy task. I’ve struggled over the years in coming up with means to increase their interest and maintain this throughout the course so that I can supply them with the tools they need to be productive and successful engineers.

As a young faculty member, I used boundless enthusiasm and energy in my lectures, which managed to maintain their interest in my lectures, but this didn’t necessarily translate into deepening their understanding of the material. They would pay attention to what I was saying, since I embedded anecdotes of my time in industry or interjected jokes into the discourse, but in the end, the “smart students” did well, and the “not as smart” students did less well, and the results in terms of what I could discern they had learned, based on their exams and finals, was about the same.  I did find over the last 10 years a number of things that did help to engage students in the learning process that did translate into broader and deeper understanding. It was after reading M2S that I saw the connection with the themes of your book and understood more broadly why these techniques worked. The problem that a professor has is a deep case of the Curse of Knowledge. Not only has it been a long time since we did not understand what we are trying to teach to students who have not yet grasped the concepts, but we have also taught it so many times, that there is a sense of “I’ve taught this 100 times, haven’t you understood it yet?” This is of course not a conscious phenomenon, but nonetheless, something that we all must battle.In the course of reading your book, I have also been re-writing the course lecture notes for this digital signal processing course and have been focussed on (using your term) “finding the core” of the course. I had come up with, over the last few years, a core set of ideas that I thought focussed on what it means to have taken and understood digital signal processing. When a student from the university of Illinois interviews at a company and says “I took digital signal processing from Prof. Singer” what are the 3 things that they need to know to both get the job *and* make the University of Illinois proud to have this graduate working in this field? By focussing on the core ideas of the course, I widdled away the extraneous details that basically served to separate the A+++ students from the A++ students, but largely fell on deaf ears on the rest of the class.Students need to understand what a mathematical model for a signal is, what happens when it is sampled, understand the concept of analog and digital frequency and how they are related, understand what happens when the digital signal is processed (in time and frequency) and what happens when this signal is then reintroduced to the analog world, through a digital-to-analog converter. This set of core ideas can be visualized in a picture, where the signals that touch the world—say a musical recording—are sampled and become a digital file, this digital file is manipulated, and then the file is played out through a D/A converter. By showing this to the class at the beginning of the term and referring back to this example, I found I could keep the class on track to the core messages I wanted them to learn. I also focussed on this core message when deciding what material to keep in the course and what should be left out. This was all before reading M2S, and now I see that I had successfully managed to get chapter 1 on my own, with a little of the notion of stories and concrete examples.

Post M2S: The night I finished reading M2S, I literally put down the book, went over to my lecture notes for the next day’s lecture and asked: “What is the core message of this lecture?” Where is it? Why am I burying this message so deeply in mathematics?  I wrote a single page with the core message for the day on it together with a catchy diagram that illustrated these key concepts. Then, I focussed on creating a set of increasingly challenging concrete examples that illustrated this key concept and developed the supporting concepts one by one. Each example that I wrote, I looked at and decided were not yet concrete enough. For example, in one case I had a signal of the form “a^n u[n]” to express a one-sided complex exponential sequence. I thought, “Why am I introducing this extraneous variable ‘a’ ” in my supposedly “concrete” example?” I replaced this with the number “1/2″ instead. Additionally, I provided a story to go with each concrete example.  “Suppose the number of album sales for a particular record fell off geometrically, with half as many sold each day—that is, the sales took the form 1000(1/2)^n for the nth day of sales, beginning with 1000 sales the first day, 500 the next, and so on…”

Basically, I grounded each signal in as concrete an example as I could. Then, when I wanted to describe properties of the signals or how I would manipulate them, I gave the corresponding meaning (as close as I could) in the story of the album sales. The lecture went flawlessly, and I kept them in class past the bell at the end of the hour. Since then, I’ve added “mysteries” to be solved, introduced early in lecture, with the answer only revealed at the end. I’ve included such “riddles” in homework and laboratory exercises, to tease out the student’s interest in understanding the concepts sufficiently well that they *want* to find the answer.

I don’t know what the end result will be at this point, however I know that the course text that I write will be much more inviting, more concrete and focussed after reading M2S than it would have otherwise been, and, whenever I stand up in front of the students, I am constantly going through the “SUCCESS” list, where, in my case, the last “S” is for Student.

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