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The art of the question.

The core of visible thinking is writing. One creates a complete thought when he or she formalizes it into tangible words but that is only half of the job of writing. The other role is to communicate the concept to a reader or listener. If the recipient understands the concept as the speaker formed it then the communication is successful. This dialogue is clear in directive statements such as when my wife asks me “Can you take out the trash?” and I do so in some hurried and confused mess at some point, though not always right then. Communication is less clear when we are working with concepts, stories, feelings, and all the other things that make it fascinating and frustrating to be human. We have art to help us through these challenges. I want to spend time on the non linguistic arts later but not today.

I teach math. The beauty and challenge of math is that it is a study of carefully ordered thinking. We have all kinds of rules, terms, properties, and muck but it is at its heart a system of logical reasoning and problem solving. Math is not “the” system but it is the most universally accepted one. As a math teacher, I answer lots of questions. So many questions. Too many questions.

Only teachers can understand the litany of questions students ask during a class. That blaze of interrogatives accosted in my first days in the classroom. As I look back, my steady need to respond was probably the most exhausting part of that first year. What harm is there in questions?

Not much but a great deal can come from the answers. People often ask before thinking. We also answer before doing so. If they do not immediately grasp the concept, they ask for further explanation. These questions are a cue that they need guidance. Embrace these for they are easier to work with then the other people who think they understand and don’t ask. Regardless, you know can now make thinking visible and, if done well, can bring the whole class along. Your motive is to direct the students to ask the right questions. You are the guide in a Socratic dialogue. Avoid responding with an explanation since that didn’t work so well the first time around. Try to ask simple questions that guide the student to respond with answers that build toward understanding. You may also want to ask other students to respond and have the process lead to a discussion. This process takes a profound understanding of the material and some flexibility. There are wrong answers but rarely is there one right one. I have learned a great deal about math by following a student’s line of reasoning. You can make quick assessments of understanding through this process and you can also find the elements that confuse students and lead to faulty reasoning. This second part is extremely useful moving forward because you can present material to address those errors.

However you present the material to your class, this dialogue is a powerful tool and one that inspires strong discussion within the class. It is only as good as the questions are so you may want to start the year discussing how important that all important element is. I am a big fan on this video from Veritasium. You could borrow from him or present the video but the focus is asking the right questions.

More to come one art as visible thinking…

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History let’s us tell a story!

History is a fundamentally interesting subject. It is our story told through so many different lenses and we learn more about our place in the world. The characters are fascinating and the more one learns, the more profound the study becomes. I was fortunate to take a wonderful survey course on the History of Science in college and left with a far greater appreciation for that realm of history. I wish I could have taken one on math history but the interwebs provides more resources than I can consume. As I read and watch lectures on the weird folks in mathematics and the profound discoveries of different societies, I have tried to process a way to teach mathematics through its history.  Maths History is a fantastic resource to help one both better understand the progression of mathematical thinking and find ways to teach appropriate concepts within their historical context.

The first lesson demonstrates a unit I plan on doing in my 7th grade Prealgebra class that follows the history of the Pythagorean Theorem and how the Greeks understood the areas as numbers. Students can examine similar shapes as areas of triangles. The Pythagoreans focused on squares on the side of triangles but the theorem works for any similar shapes (semi-circles would be readily done). We can examine the relationships by constructing different triangles and comparing the area of the squares on the three sides. By changing the triangles, we can look at congruence and similarity, as well as the nature of right triangles. This part does not follow the Greek version but will allow us to work with measurements, fractions, and scaling. Once students come to a Pythagorean conclusion, we will move to studying the classic proof of the theorem and finally applications that can develop to the Distance Formula.

The Pythagoreans were an interesting group and they believed that the world should be explainable by rational numbers. They developed harmonies based on ratios of Natural Numbers. My own understanding of music is too slim but we could have a great small project examining harmonies as balances of rational numbers.

Rational numbers were great and wonderful until they studied a square. The ratio of the side to the diagonal of a square is the square root of two. The classic proof of this number’s irrationality is based on the fundamental theorem of arithmetic.As we study this proof, we can study prime factorization which leads to integer exponents, GCF’s, LCM’s and basic number theory.  This element also leads to the most interesting part of the history, the story Hippasus. He was rumored to have either discovered the proof or revealed it to an outsider and so the Pythagoreans drowned him at sea.

The proofs are perhaps the most challenging element but it is important for students to see how the process works for proofs are the heart of mathematics. These are not the two column proofs of geometry class but real logical arguments based on reasoning that lead to new understanding. These proofs are challenging and provide wonderful avenues for visible thinking routines. If a student can explain these proofs and then apply them to a variety of problems then he or she will have built a strong foundation for mathematical reasoning.

The unit will take several weeks rather than the single lecture. How is that and why would it be interesting? A 7th grade prealgebra class really needs to cover common core standards for 7th and 8th grade. This unit addresses parts of 3 of the main objectives of 7th grade and 2 of the primary objectives for 8th grade.

Along the way, history provides a narrative arch and allows for many more avenues to explore and keep the material interesting.

For more resources: MacTutor is great. Cut-the-knot is wealth of information.

I will add more to this list and look forward to hearing from y’all.

Next up, history of numbers…

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Technology is just another tool.

I recall doing some research for a paper in grad school about technology. I don’t remember the source but it did discuss that technology was any tool  that enabled the user. We think of computers and all the fancy electronic gadgets of the world as technology but it is no more so than a pencil or scissors. Those items didn’t count as technology for the assignment but my Professor agreed that they were tech by definition.

In my time teaching, I have come to depend on computers as a crucial part of my classroom but do not see them as necessary to all. I am currently working on plans that remove the computer from the classroom and have it for outside, where it can best help students. I would love to be able to use the great education tools like geogebra more in the class but it often struggle with a lack of student engagement. They are afraid to play with the program and want to follow directions.

Directions…I firmly believe that many students are too programmed to seeing math as a list of directions. Each problem comes with a set of instructions to solve. This view quickly leads to a lack of retention and demonstrates no understanding when they see a test as fifty different systems and not as fifty variations of the same over arching rule set. Students who follow this method are not inclined to play with numerical concepts or experiment with mathematical logic. The study is a chore and one that must be done for some reason about the future. Standardized tests somehow reinforce this line of thinking though it leads to poor test takers for they are not flexible in problem solving and struggle with new questions.

How does one change the student mindset so that math becomes the profoundly interesting study that it is and not a painful exercise in drilling and boredom? Games are a great avenue if they are properly designed. They need to encourage thinking through play. People are not afraid of mistakes when they play and are interested in the rules of the game for they are the source of the challenge. I believe Whole is a great game in that it allows for plenty of experimentation but the parameters are key parts of the mathematical system. There are a wealth of other great games and plenty of avenues to make more for your class.

When students develop a strong understanding of how numbers and patterns work, then they will be intrigued by the possibilities of geogebra and embrace the challenge of complex problems. My personal goal for this upcoming year is to enact a system for students that build that strong foundation. I plan on using some of the Visible Thinking concepts, the most important of which is to make students write about what they are doing and why. This process will challenge them to think past the step of directions and provide me with another avenue to help guide them.

Technology will have its place for the is little more powerful than pen and paper.

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What is it to be a good teacher?

Circles!I embrace the joy of education conferences and all the excitement of learning new things and meeting swell new people. Yet every time I hear a master teacher speak or sit in another presentation by a truly dynamic educator, I start questioning myself.  I know other teachers do but they don’t like to talk about it. They want to learn the newest in Problem Based Learning and make their classroom a wonderland of visible thinking integrated with the best uses of technology. How do these people inspire such wondrous learning and where do they find the time within everything else? Can I ever be anything like that or will I just be who I am?

I don’t know if I will ever be able to qualify myself as a master teacher and I don’t always integrate new methods with my own for the most successful class but I do know that I am a very good teacher. Why? It is not test scores and all that painful stuff. I know for the same reason you know and the same reason we all came to teaching. My students are always present for class and view it as something they want to be part of. My only secret is that I am myself and I care about those students. Class should be a time to learn and I insist that we do learn but it does not always have to be about quadratics or rational functions. The world is beyond our wildest dreams of understanding and kids are desperate to know as much as they can about all parts of it. If you find a time in class where it they need to focus on what it is to be a good friend or how to draw a straight line or appreciate their history or how to tie a bowline, then that is right and good thing to do. We, as teachers, are there to guide young people into being the best that they can be. None of us will be successful with all of our students but we all will resonate with some of them. Identify the part of yourself, that best part, that commands the most attention. The best part…therein lies another key.

I did steel work for many years before teaching. I was dirty and cussed like a sailor. As soon as I knew that I would be in the classroom I changed my language and worked on being a decent role model for students. Teaching has inspired me to be a better person because I can then be a better model for my students. I could more effectively guide them through the mean and awful parts of ourselves. Each of us has walked a different path and fought different personal battles along the way and so each of us has a wealth of guidance to offer in the classroom.

I guess this is all a somewhat round about way of saying is work on being the best person and teacher that you can be. Whatever you or I do that inspires people to improve is what we should be doing. Move forward, improve your craft, and keep your strengths in sight.