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Judy Arzt

Social Bookmarking with students: Quality not quantity! | The Edublogger - 13 views

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    New Blog post: Social Bookmarking with students: Quality not quantity! http://t.co/h0MPEkeR
Mark Gleeson

Creativity and Quality vs Time Constraints and Quantity - 73 views

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    Do we give children enough time to succeed?
Bob Rowan

Chris Anderson of WIRED on tech's Long Tail | Video on TED.com - 26 views

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    describes how books that previously wouldn't have been available in bookstores now outsell the better known books that sell larger quantities (there a lot of these "niche" books that sell to smaller audiences)
Wayne Holly

Quick Rubric - Free, Fast, and Easy to Use! :) - 72 views

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    Quick Rubric is a free tool for writing, editing, and printing rubrics.On Quick Rubric you can create a rubric that is tailored to your points/ scoring system, the quantity of descriptors that you need, and utilizes the exact language that you specify. You can save as many rubrics as you like in your free Quick Rubric account. You can copy and modify rubrics your account so that you don't always have to start from scratch when creating a new assignment rubric.
dpurdy

Hydrogen vehicle - Wikipedia, the free encyclopedia - 13 views

    • dpurdy
       
      Is hydrogen sustainable? depends on the source. see this highlight.
  • While methods of hydrogen production that do not use fossil fuel would be more sustainable
  • The challenges facing the use of hydrogen in vehicles include production, storage, transport and distribution.
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  • The hydrogen infrastructure consists mainly of industrial hydrogen pipeline transport and hydrogen-equipped filling stations like those found on a hydrogen highway. Hydrogen stations which are not situated near a hydrogen pipeline can obtain supply via hydrogen tanks, compressed hydrogen tube trailers, liquid hydrogen tank trucks or dedicated onsite production.
  • Hydrogen use would require the alteration of industry and transport on a scale never seen before in history. For example, according to GM, 70% of the U.S. population lives near a hydrogen-generating facility but has little access to hydrogen, despite its wide availability for commercial use.[64] The distribution of hydrogen fuel for vehicles throughout the U.S. would require new hydrogen stations that would cost, by some estimates approximately 20 billion dollars[65] and 4.6 billion in the EU.[66] Other estimates place the cost as high as half trillion dollars in the United States alone.[67]
  • Hydrogen fuel does not occur naturally on Earth and thus is not an energy source, but is an energy carrier. Currently it is most frequently made from methane or other fossil fuels. However, it can be produced from a wide range of sources (such as wind, solar, or nuclear) that are intermittent, too diffuse or too cumbersome to directly propel vehicles. Integrated wind-to-hydrogen plants, using electrolysis of water, are exploring technologies to deliver costs low enough, and quantities great enough, to compete with traditional energy sources.[2]
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    Fuel cell cars are expensive.  The fuel cell costs a lot
Jac Londe

Truly random numbers - 41 views

  • At a quantum scale, the motion of electrons and protons is completely and genuinely random, since it doesn’t follow a clear path of cause and effect. You basically have no idea what’s going to happen. If you can measure this somehow, than you’ve got yourself an absolutely random value.
  • “If you want to defeat an adversary who is trying to hack into your system, basically you need large quantities of random numbers,”  Sussman said.
  • “…a truly random number generator will provide impenetrable encryption for communications — be they military transmissions, secure banking, or online purchasing — that underpin the modern connected world.”
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  • The researchers used pulses of laser light, which only last a trillionth of a second, that were directed through a diamond. The light comes and goes through the diamond, however when it exists it’s changed, since it has to pass through quantum vacuum fluctuations, the microscopic flickering of the amount of energy in a point in space. Scientists can measure these pulses of light that emerge from the experimental set-up, measurements which are the truly random.
  • random numbers
  • with quantum physics
Char Shryock

Math and our number sense | Science News for Kids - 50 views

  • Studies with teenagers show that students who excel at estimating quantities also did well on standard math achievement tests, going as far back as kindergarten.
    • Char Shryock
       
      Main Idea for further research
Maughn Gregory

How to Fix Our Math Education - NYTimes.com - 63 views

  • the assumption that there is a single established body of mathematical skills that everyone needs to know to be prepared for 21st-century careers. This assumption is wrong. The truth is that different sets of math skills are useful for different careers, and our math education should be changed to reflect this fact.
  • Today, American high schools offer a sequence of algebra, geometry, more algebra, pre-calculus and calculus (or a “reform” version in which these topics are interwoven). This has been codified by the Common Core State Standards, recently adopted by more than 40 states. This highly abstract curriculum is simply not the best way to prepare a vast majority of high school students for life.
  • A math curriculum that focused on real-life problems would still expose students to the abstract tools of mathematics, especially the manipulation of unknown quantities. But there is a world of difference between teaching “pure” math, with no context, and teaching relevant problems that will lead students to appreciate how a mathematical formula models and clarifies real-world situations.
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  • For instance, how often do most adults encounter a situation in which they need to solve a quadratic equation? Do they need to know what constitutes a “group of transformations” or a “complex number”? Of course professional mathematicians, physicists and engineers need to know all this, but most citizens would be better served by studying how mortgages are priced, how computers are programmed and how the statistical results of a medical trial are to be understood.
  • Imagine replacing the sequence of algebra, geometry and calculus with a sequence of finance, data and basic engineering.
  • Traditionalists will object that the standard curriculum teaches valuable abstract reasoning, even if the specific skills acquired are not immediately useful in later life. A generation ago, traditionalists were also arguing that studying Latin, though it had no practical application, helped students develop unique linguistic skills. We believe that studying applied math, like learning living languages, provides both useable knowledge and abstract skills.
  • In math, what we need is “quantitative literacy,” the ability to make quantitative connections whenever life requires (as when we are confronted with conflicting medical test results but need to decide whether to undergo a further procedure) and “mathematical modeling,” the ability to move practically between everyday problems and mathematical formulations (as when we decide whether it is better to buy or lease a new car).
Sharin Tebo

Teaching Metacognition - 78 views

  • Step 1: Teach students that the ability to learn is not a fixed quantity The key to a student's ability to become a self-regulated (i.e., metacognitive) learner is understanding that one's ability to learn is a skill that develops over time rather than a fixed trait, inherited at birth.
    • Sharin Tebo
       
      Carol Dweck's book on having a Growth Mindset comes to mind here...
  • Step 2: Teach students how to set goals and plan to meet them
  • Step 3: Give students opportunities to practice self-monitoring and adapting Accurate self-monitoring is quite difficult.
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  • In particular, students are encouraged to think about the key points of the lecture as they listen and take notes. At the end of the lecture, students write what they think the three most important ideas of the lecture were on an index card.
  • Example: lecture wrappers
  • Teaching Self-Monitoring Strategies Monitoring and adapting strategies can be taught as learning habits. A wrapper is one tool for teaching self-monitoring behavior. A wrapper is an activity that surrounds an existing assignment or activity and encourages metacognition. For example, wrappers can be used with lectures, homework assignments, or exams. Wrappers require just a few extra minutes of time, but can have a big impact.
  • Example: homework wrappers Before beginning a homework assignment, students answer a brief set of self-assessment questions focusing on skills they should be monitoring. Students complete the homework as usual, and then answer a follow-up set of self-assessment questions.
  • Example: exam wrappers When graded exams are returned (as soon as possible after the exam was given), students complete an exam reflection sheet. They describe their study strategies, analyze the mistakes they made, and plan their study strategies for the next exam.
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    "Metacognition is a critically important, yet often overlooked component of learning. Effective learning involves planning and goal-setting, monitoring one's progress, and adapting as needed. All of these activities are metacognitive in nature. By teaching students these skills - all of which can be learned - we can improve student learning. There are three critical steps to teaching metacognition:"
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    Really useful reminder of how we need to address very basic ideas about how to absorb new information and ask students to self-monitor and push themselves. I appreciated the information and plan to incorporate the wrappers!
Jac Londe

Fractional-reserve banking - Wikipedia, the free encyclopedia - 1 views

  • Fractional-reserve banking
  • Fractional-reserve banking is a type of banking whereby the bank does not retain all of a customer’s deposits within the bank. Funds received by the bank are generally lent to other customers. This means that available funds (called bank reserves) are only a fraction (called the reserve ratio) of the quantity of deposits at the bank. As most bank deposits are treated as money in their own right, fractional reserve banking increases the money supply, and banks are said to create money.
Michael Hylton

Quality Homework - A Smart Idea - NYTimes.com - 70 views

  • The studying that middle school and high school students do after the dismissal bell rings is either an unreasonable burden or a crucial activity that needs beefing up. Which is it? Do American students have too much homework or too little? Neither, I’d say. We ought to be asking a different question altogether. What should matter to parents and educators is this: How effectively do children’s after-school assignments advance learning?
  • The quantity of students’ homework is a lot less important than its quality. And evidence suggests that as of now, homework isn’t making the grade. Although surveys show that the amount of time our children spend on homework has risen over the last three decades, American students are mired in the middle of international academic rankings: 17th in reading, 23rd in science and 31st in math, according to results from the Program for International Student Assessment released last December.
  • “Spaced repetition” is one example of the kind of evidence-based techniques that researchers have found have a positive impact on learning. Here’s how it works: instead of concentrating the study of information in single blocks, as many homework assignments currently do — reading about, say, the Civil War one evening and Reconstruction the next — learners encounter the same material in briefer sessions spread over a longer period of time. With this approach, students are re-exposed to information about the Civil War and Reconstruction throughout the semester.
Javier E

The Default Major - Skating Through B-School - NYTimes.com - 41 views

  • Dr. Mason, who teaches economics at the University of North Florida, believes his students are just as intelligent as they’ve always been. But many of them don’t read their textbooks, or do much of anything else that their parents would have called studying. “We used to complain that K-12 schools didn’t hold students to high standards,” he says with a sigh. “And here we are doing the same thing ourselves.”
  • all evidence suggests that student disengagement is at its worst in Dr. Mason’s domain: undergraduate business education.
  • “Business education has come to be defined in the minds of students as a place for developing elite social networks and getting access to corporate recruiters,”
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  • It’s an attitude that Dr. Khurana first saw in M.B.A. programs but has migrated, he says, to the undergraduate level.
  • Second, in management and marketing, no strong consensus has emerged about what students ought to learn or how they ought to learn it.
  • Gains on the C.L.A. closely parallel the amount of time students reported spending on homework. Another explanation is the heavy prevalence of group assignments in business courses: the more time students spent studying in groups, the weaker their gains in the kinds of skills the C.L.A. measures.
  • The pedagogical theory is that managers need to function in groups, so a management education without such experiences would be like medical training without a residency. While some group projects are genuinely challenging, the consensus among students and professors is that they are one of the elements of business that make it easy to skate through college.
  • “We’ve got students who don’t read, and grow up not reading,” he says. “There are too many other things competing for their time. The frequency and quantity of drinking keeps getting higher. We have issues with depression. Getting students alert and motivated — even getting them to class, to be honest with you — it’s a challenge.”
  • “A lot of classes I’ve been exposed to, you just go to class and they do the PowerPoint from the book,” he says. “It just seems kind of pointless to go when (a) you’re probably not going to be paying much attention anyway and (b) it would probably be worth more of your time just to sit with your book and read it.”
  • “It seems like now, every take-home test you get, you can just go and Google. If the question is from a test bank, you can just type the text in, and somebody out there will have it and you can just use that.”
  • This is not senioritis, he says: this is the way all four years have been. In a typical day, “I just play sports, maybe go to the gym. Eat. Probably drink a little bit. Just kind of goof around all day.” He says his grade-point average is 3.3.
  • concrete business skills tend to expire in five years or so as technology and organizations change.
  • History and philosophy, on the other hand, provide the kind of contextual knowledge and reasoning skills that are indispensable for business students.
  • when they hand in papers, they’re marked up twice: once for content by a professor with specialized expertise, and once for writing quality by a business-communication professor.
  • a national survey of 259 business professors who had been teaching for at least 10 years. On average, respondents said they had reduced the math and analytic-thinking requirements in their courses. In exchange, they had increased the number of requirements related to computer skills and group presentations.
  • what about employers? What do they want? According to national surveys, they want to hire 22-year-olds who can write coherently, think creatively and analyze quantitative data, and they’re perfectly happy to hire English or biology majors. Most Ivy League universities and elite liberal arts colleges, in fact, don’t even offer undergraduate business majors.
D. S. Koelling

A Perfect Storm in Undergraduate Education, Part I - Advice - The Chronicle of Higher E... - 40 views

  • at least 45 percent of undergraduates demonstrated "no improvement in critical thinking, complex reasoning, and writing skills in the first two years of college, and 36 percent showed no progress in four years."
  • What good does it do to increase the number of students in college if the ones who are already there are not learning much? Would it not make more sense to improve the quality of education before we increase the quantity of students?
  • students in math, science, humanities, and social sciences—rather than those in more directly career-oriented fields—tend to show the most growth in the areas measured by the Collegiate Learning Assessment, the primary tool used in their study. Also, students learn more from professors with high expectations who interact with them outside of the classroom. If you do more reading, writing, and thinking, you tend to get better at those things, particularly if you have a lot of support from your teachers.
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  • Increasingly, undergraduates are not prepared adequately in any academic area but often arrive with strong convictions about their abilities.
  • It has become difficult to give students honest feedback.
  • As the college-age population declines, many tuition-driven institutions struggle to find enough paying customers to balance their budgets. That makes it necessary to recruit even more unprepared students, who then must be retained, shifting the burden for academic success away from the student and on to the teacher.
  • Although a lot of emphasis is placed on research on the tenure track, most faculty members are not on that track and are retained on the basis of what students think of them.
  • Students gravitate to lenient professors and to courses that are reputedly easy, particularly in general education.
  • It is impossible to maintain high expectations for long unless everyone holds the line in all comparable courses—and we face strong incentives not to do that.
  • Formerly, full-time, tenured faculty members with terminal degrees and long-term ties to the institution did most of the teaching. Such faculty members not only were free to grade honestly and teach with conviction but also had a deep understanding of the curriculum, their colleagues, and the institutional mission. Now undergraduate teaching relies primarily on graduate students and transient, part-time instructors on short-term contracts who teach at multiple institutions and whose performance is judged almost entirely by student-satisfaction surveys.
  • Contingent faculty members, who are paid so little, routinely teach course loads that are impossible to sustain without cutting a lot of corners.
  • Many colleges are now so packed with transient teachers, and multitasking faculty-administrators, that it is impossible to maintain some kind of logical development in the sequencing of courses.
  • Students may be enjoying high self-esteem, but college teachers seem to be suffering from a lack of self-confidence.
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    So many issues here to deal with. Good read.
anonymous

Dogs Are What They Eat - PawNation - 15 views

  • There are six nutrient groups that are important for all dogs: proteins, carbohydrates, fats, vitamins, minerals, and water.
    • anonymous
       
      Use the vitamin video from YouTube. www.youtube.com/ksdfjsdflj
  • Essential amino acids are those that are required in the diet because your dog's body is incapable of synthesizing them in sufficient quantities.
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  • Fatty acids, a specific type of fat, play an important role in regulating the body's inflammatory response and are particularly important for your dog's health – particularly for the skin and a coat.
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    What a dog needs in their diet to be healthy.
Andrew McCluskey

Occupy Your Brain - 111 views

  • One of the most profound changes that occurs when modern schooling is introduced into traditional societies around the world is a radical shift in the locus of power and control over learning from children, families, and communities to ever more centralized systems of authority.
  • Once learning is institutionalized under a central authority, both freedom for the individual and respect for the local are radically curtailed.  The child in a classroom generally finds herself in a situation where she may not move, speak, laugh, sing, eat, drink, read, think her own thoughts, or even  use the toilet without explicit permission from an authority figure.
  • In what should be considered a chilling development, there are murmurings of the idea of creating global standards for education – in other words, the creation of a single centralized authority dictating what every child on the planet must learn.
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  • In “developed” societies, we are so accustomed to centralized control over learning that it has become functionally invisible to us, and most people accept it as natural, inevitable, and consistent with the principles of freedom and democracy.   We assume that this central authority, because it is associated with something that seems like an unequivocal good – “education” – must itself be fundamentally good, a sort of benevolent dictatorship of the intellect. 
  • We endorse strict legal codes which render this process compulsory, and in a truly Orwellian twist, many of us now view it as a fundamental human right to be legally compelled to learn what a higher authority tells us to learn.
  • And yet the idea of centrally-controlled education is as problematic as the idea of centrally-controlled media – and for exactly the same reasons.
  • The First Amendment of the U.S. Constitution was designed to protect all forms of communication, information-sharing, knowledge, opinion and belief – what the Supreme Court has termed “the sphere of intellect and spirit” – from government control.
  • by the mid-19th century, with Indians still to conquer and waves of immigrants to assimilate, the temptation to find a way to manage the minds of an increasingly diverse and independent-minded population became too great to resist, and the idea of the Common School was born.
  • We would keep our freedom of speech and press, but first we would all be well-schooled by those in power.
  • A deeply democratic idea — the free and equal education of every child — was wedded to a deeply anti-democratic idea — that this education would be controlled from the top down by state-appointed educrats.
  • The fundamental point of the Occupy Wall Street movement is that the apparatus of democratic government has been completely bought and paid for by a tiny number of grotesquely wealthy individuals, corporations, and lobbying groups.  Our votes no longer matter.  Our wishes no longer count.  Our power as citizens has been sold to the highest bidder.
  • Our kids are so drowned in disconnected information that it becomes quite random what they do and don’t remember, and they’re so overburdened with endless homework and tests that they have little time or energy to pay attention to what’s happening in the world around them.
  • If in ten years we can create Wikipedia out of thin air, what could we create if we trusted our children, our teachers, our parents, our neighbors, to generate community learning webs that are open, alive, and responsive to individual needs and aspirations?  What could we create if instead of trying to “scale up” every innovation into a monolithic bureaucracy we “scaled down” to allow local and individual control, freedom, experimentation, and diversity?
  • The most academically “gifted” students excel at obedience, instinctively shaping their thinking to the prescribed curriculum and unconsciously framing out of their awareness ideas that won’t earn the praise of their superiors.  Those who resist sitting still for this process are marginalized, labeled as less intelligent or even as mildly brain-damaged, and, increasingly, drugged into compliance.
  • the very root, the very essence, of any theory of democratic liberty is a basic trust in the fundamental intelligence of the ordinary person.   Democracy rests on the premise that the ordinary person — the waitress, the carpenter, the shopkeeper — is competent to make her own judgments about matters of domestic policy, international affairs, taxes, justice, peace, and war, and that the government must abide by the decisions of ordinary people, not vice versa.  Of course that’s not the way our system really works, and never has been.   But most of us recall at some deep level of our beings that any vision of a just world relies on this fundamental respect for the common sense of the ordinary human being.
  • This is what we spend our childhood in school unlearning. 
  • If before we reach the age of majority we must submit our brains for twelve years of evaluation and control by government experts, are we then truly free to exercise our vote according to the dictates of our own common sense and conscience?  Do we even know what our own common sense is anymore?
  • We live in a country where a serious candidate for the Presidency is unaware that China has nuclear weapons, where half the population does not understand that Saddam Hussein had nothing to do with 9/11, where nobody pays attention as Congress dismantles the securities regulations that limit the power of the banks, where 45% of American high school students graduate without knowing that the First Amendment of the Constitution guarantees freedom of the press.   At what point do we begin to ask ourselves if we are trying to control quality in the wrong way?
  • Human beings, collaborating with one another in voluntary relationships, communicating and checking and counter-checking and elaborating and expanding on one another’s knowledge and intelligence, have created a collective public resource more vast and more alive than anything that has ever existed on the planet.
  • But this is not a paeon to technology; this is about what human intelligence is capable of when people are free to interact in open, horizontal, non-hierarchical networks of communication and collaboration.
  • Positive social change has occurred not through top-down, hierarchically controlled organizations, but through what the Berkana Institute calls “emergence,” where people begin networking and forming voluntary communities of practice. When the goal is to maximize the functioning of human intelligence, you need to activate the unique skills, talents, and knowledge bases of diverse individuals, not put everybody through a uniform mill to produce uniform results. 
  • You need a non-punitive structure that encourages collaboration rather than competition, risk-taking rather than mistake-avoidance, and innovation rather than repetition of known quantities.
  • if we really want to return power to the 99% in a lasting, stable, sustainable way, we need to begin the work of creating open, egalitarian, horizontal networks of learning in our communities.
  • They are taught to focus on competing with each other and gaming the system rather than on gaining a deep understanding of the way power flows through their world.
  • And what could we create, what ecological problems could we solve, what despair might we alleviate, if instead of imposing our rigid curriculum and the destructive economy it serves on the entire world, we embraced as part of our vast collective intelligence the wisdom and knowledge of the world’s thousands of sustainable indigenous cultures?
  • They knew this about their situation: nobody was on their side.  Certainly not the moneyed classes and the economic system, and not the government, either.  So if they were going to change anything, it had to come out of themselves.
  • As our climate heats up, as mountaintops are removed from Orissa to West Virginia, as the oceans fill with plastic and soils become too contaminated to grow food, as the economy crumbles and children go hungry and the 0.001% grows so concentrated, so powerful, so wealthy that democracy becomes impossible, it’s time to ask ourselves; who’s educating us?  To what end?  The Adivasis are occupying their forests and mountains as our children are occupying our cities and parks.  But they understand that the first thing they must take back is their common sense. 
  • They must occupy their brains.
  • Isn’t it time for us to do the same?
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    Carol Black, creator of the documentary, "Schooling the World" discusses the conflicting ideas of centralized control of education and standardization against the so-called freedom to think independently--"what the Supreme Court has termed 'the sphere of intellect and spirit" (Black, 2012). Root questions: "who's educating us? to what end?" (Black, 2012).
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    This is a must read. Carol Black echoes here many of the ideas of Paulo Freire, John Taylor Gatto and the like.
Rafael Morales_Gamboa

Contemplating the consequences of Constructivism - The Learner's Way - 21 views

  • learning is a process which occurs within the mind of the individual as they process stimuli arriving from their sensory buffer from their environment (broadly speaking), into working memory and onward into long-term memory. 
    • Rafael Morales_Gamboa
       
      The emphasis does not have to be on the individual, as is common. The social group learns by means of individual, but joined and synchronized, learning.
  • self-guided learning or self-initiated learning
    • Rafael Morales_Gamboa
       
      Not in the case of social constructivism.
  • what is significant
    • Rafael Morales_Gamboa
       
      To others...
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  • independent practice
    • Rafael Morales_Gamboa
       
      and social practice
  • the research on what produces effective learning supports this
    • Rafael Morales_Gamboa
       
      Of course, that depends on what exactly is evaluated.
  • This desire is evident when we expect our learners to be scientists, historians, geographers, researchers and problem solvers/finders.
    • Rafael Morales_Gamboa
       
      As well as critical citizens.
  • We teach the skills of inquiry, problem solving and experimentation and then provide opportunities for independent practice.
    • Rafael Morales_Gamboa
       
      Can you imagine anything a better explanation of "knowledge transfer"?
  • we have previously instructed them in
  • The gradual release of responsibility model of instruction suggests that cognitive work should shift slowly and intentionally from teacher modeling, to joint responsibility between teachers and students, to independent practice and application by the learner
    • Rafael Morales_Gamboa
       
      Does not sounds like the classroom is empty? Classmates? Who cares about them?
  • It is not always the case that learning is best served when the process begins with direct instruction.
  • Schools provide a rich environment within which such learning may occur
    • Rafael Morales_Gamboa
       
      It is not always the case, and I would rather say that is not often the case, if our cultural legacy that depicts the school in literature and films.
  • best model can be to begin with an independent exploration of new content even when this produces failure
  • schools maximise their impact on the learning that occurs
  • constructivism urges teachers to ensure that the learner is at least as involved in the process as their teachers are
    • Rafael Morales_Gamboa
       
      I would call that "teacher-centred constructivism".
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    Constructivism is one of those ideas we throw around in educational circles without stopping to think about what we mean by it. They are the terms that have multiple meanings, are at once highly technical and common usage and are likely to cause debate and disagreements. Constructivism in particular carries a quantity of baggage with it. It is a term that is appropriated by supporters of educational approaches that are in stark contrast to the opposing view; constructivism vs didactic methods or direct instruction. The question is what are the origins of constructivism and does a belief in this as an approach to understanding learning necessitate an abandonment of direct instruction or is this a false dichotomy?
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