Friday, July 17, 2020

Feedback is the lubricating oil of teaching and learning. Yet feedback in online learning – its mostly absent...

In this age of Covid-induced, online learning, people have rushed to Zoom, recorded videos and content that, far from being Blended Learning, is Blended Teaching. To be fair, some effort is made to get learners to do effortful learning, usually multiple choice questions or tasks which are returned to the teacher or lecturer. Unless you already have a good platform and have been doing this for some time in something like Teams or Google Education, what is so often missing is good FEEDBACK.

Locomotive power of feedback 
Feedback is the lubricating oil of teaching and learning. Feedback is, to be precise, an accelerator. It speeds up learning and reduces the amount of time spent teaching. It motivates and propels learners forward. 

Most of the frustration experienced by learners is poor, slow or inadequate feedback; the embarrassment of being asked questions in a classroom in front of others, even one-to-one by a human tutor, the fear of asking questions in a classroom or in a Zoom session, as you’d feel stupid, the lack of opportunity to ask for clarification or ask questions in a Zoom lesson, classroom or lecture, the email reply that takes days to come back, that solitary mark A-D and brief comment on a piece of work or general and non-specific comments like ‘needs more clarification’.

Good feedback

Ideally, feedback should be:
Personal
Immediate
Useful
Visible
Catalytic
Shared

These are all problems that technology can solve, yet we spend so much of our technology time to present media ‘experiences’ that we forget about the locomotive power of feedback. Creating videos, graphics and screeds of text is easy, feedback is personal and hard. Yet there are methods that have emerged from recent technology that make it much easier. We need more focus on technology to deliver feedback and less on technology to deliver media.

Personal

It is difficult in a classroom or lecture hall to provide personalised feedback. At best you provide feedback for the few not the many, the extroverts not the introverts, the knowledgeable not the confused. The typical ‘hands up anyone’, still common in classrooms, encourages exactly the wrong type of feedback from the wrong learners. Eliciting whole class responses is difficult and providing generalised feedback often misses the very learners that need it most. It’s the people that don’t have their hands up that matter. Mazur has tried group questions and peer learning and feedback in lectures. The research suggests it works but few have implemented it, as it’s clumsy and takes a lot of preparation. Lecturing is easy, actual teaching is hard.

Technology allows you to target specific feedback to specific learners at the time of need. This can be within an online session, where the problem or misconception is diagnosed and feedback quick, precise and useful. It can also spark off other learning activities and motivate the learner on to the next task or level. In some systems feedback nudges and alerts are delivered to do precisely this, within the learning journey. At a higher level, adaptive learning provides realtime adjustments in the learning for every individual, as they go through their own learning journey. Its feedback mechanism is to remediate, represent and resequence to make sure that no one goes off-course, like your GPS or SatNav in your car. You take a wrong turn and go off course, it gets you back on course. If you believe in feedback, you should believe in personalised learning, as feedback needs to be targeted at that learner. Its granularity should not be at group level, it needs to be particular to the individual.

Immediate

Learners need feedback at their point of need. That can be a need for specific clarification during a teaching event, it can be about where to look next, it can be feedback about an assignment, feedback on work submitted, clarification on progress, clarification during revision for an exam. Whatever the context, it needs to be immediate and quick. If it is not, the moment has passed and the opportunity has been lost.

Technology can deliver fast. At Georgia tech, the teaching assistant chatbot delivered so fast that the students suspected it was a bot, so they slowed it down to make it look as though someone was typing. Don’t underestimate the efficacy of timely delivery. When you need help, you need help there and then, not later.

Useful

Feedback is so often generalised. Comments such as ‘needs more detail’, ‘further clarification needed’ and so on. Learners need precise feedback that solves their problem, a correction, clear clarification or suggestion on how to improve. This makes it difficult for feedback to be wholly generated by human hand. The workload would be huge. Yet we know that feedback, is, to a degree, repetitive. The same misconceptions, issues, problems and requests come up again and again.

Technology can provide degrees of automation, with consistent precision. It never gets tired, ill, grumpy or hungover. It doesn’t sleep 8 hours a day, work 8 hours a day, forget to get back to you, or have other work to do. It can deliver consistently 24/7 and is scalable to as many learners as you want.

Visible

This may seem odd but is often forgotten. The problem with verbal feedback, is that it is not recorded or visible down the line. For feedback to be truly effective it needs to be recorded, made visible and archived. Feedback needs to be made visible so that it is not forgotten and is acted upon.

I’ve been involved with students who do their entire degrees online. Year on year they outperform their campus-based colleagues. One of the reasons for this is that their work is submitted digitally and all tutor feedback is literally written on the work, everything is recorded or archived, as it is online. This means the feedback is available for students to see, reflect upon, deal with and progress. It is also available for tutors to check further down the line, in terms of being acted upon. It can be written, audio or video. It literally makes for better teaching and learning.

Catalytic

Feedback is not merely a corrective mechanism, like the regulator on an engine, it is the accelerator pedal. Good feedback is a call to action. It can unblock a confusion or misconception freeing the student to move forward. It can also allow them to move forward and complete that solution in maths, analysis in an English essay, coding problem in software and so on. More than this, it can propel the student forward, push them onwards doing something for themselves to solve the problem. Feedback is sometimes giving straight answers to straight questions but it is also, often in teaching, giving signposts to students in how they can find the answers out for themselves. It can also open their minds up to the possibilities of personal research. Feedback on how to use search on Google more effectively, use Google Scholar or write something more concisely... all of these things can move things on quickly.

Shared

Learners often share things. We know that they help each other and peer sharing and learning can be productive (when it’s not cheating!). Making general feedback visible to others, generally and anonymised is a good thing.

Of course, young learners share things every few minutes on social media. That is their area of expertise. We can tap into this by encouraging the sharing. Technology such as adaptive learning does this beautifully. It takes aggregated data from everyone who did a course, or even series of courses, along with personal data, and applies what it knows and learns to the task of providing help in realtime to all future students. These are systems that literally get better with use. Yet, even though a world leader in such systems is a UK company, no UK educational establishments use it for learning. All of its use is in the US and elsewhere.

Feedback is a process not an event

Learning and feedback is an essential feature of formal learning, is a process not an event. When people learn online the structure of periods, lectures, classrooms and timetables disappears. You need to work harder to keep learners on task, feedback is the spark and stimulus that gets them to the next stage. Feedback is the process that propels online learning.

Technology is a process that never sleeps

Technology can deliver teaching as well as feedback. We’ve been using AI to create  content, in minutes not months, using WildFire. It creates questions that get learners to be active and effortful in their learning with formative feedback that pushes them towards competence, not simply multiple-choice questions but open-input, where full sentences are semantically interpreted. We’re also working on AI to generate massive amounts of feedback that can be captured and used in online learning. Natural Language Processing is opening up all sorts of fascinating possibilities for feedback. It’s a shame we’re still stuck largely with Zoom, Oak Academy and multiple choice as our default.

Thursday, July 16, 2020

What should schools, colleges and Universities do in September? …7 actions

Let me start with a tough question. Weighing your wish to return to schools or campuses, given the current surge of Covid cases, is the return to the classroom or chasing the cash worth a single dead student, teacher or parent? Or should we see the September return as an opportunity to change things for the better and by that I mean for teachers, lecturers, students and parents? We need a reset.

1. Blended learning

Hang your hat on this phrase, use it as your strategy. See all future education as an optimal ‘blend’ of teaching and learning methods. Look at the whole learning journey, not just the delivery of ‘lessons’. It starts with learner engagement, learner support, delivery of learning, feedback, formative assessment and summative assessment. You may also want to add ‘wellbeing’. Before Covid, kids and students got ill, students didn’t turn up to lectures (40%), snow fell, floods happened. Covid just universalised something that has been happing for as long as there’s been schools, colleges and Universities – absent learners. Note that Blended Learning is not Blended Teaching, just as Zoom and some pre-recorded videos is not serious, online learning. Blended learning recognises the types of learning, context for learners and resources available. It is the art of the possible.
What is Blended learning?

2. Effortful learning

Endless talking heads on Zoom is not nearly enough. It can be useful for that personal touch and some synchronous stuff will help keep learners on schedule, but most online learning will be asynchronous, not in real time. If you do use lectures and direct instruction, record them. Leaners need to stop, rewind, repeat, revise. Some may have English as a second language. They may have difficulties getting access to the home computer or find a space at that time. To be honest video, on its own, is pretty poor without effortful learning. 
Pre-recorded videos with multiple choice questions is also never enough. Take the advice of Roediger and MacDaniel, two academics who know their stuff on online learning. Students need to make the ‘effort’, cognitively, to learn. That does not mean just taking notes, although that is important. It’s what happens beyond this. Don’t underline and re-read, make the effort to turn away from the page and recall. That’s effortful learning, along with generative learning, where the learner generates new work and doing, real assignments and projects. Then there’s interleaving, retrieval practice and spaced practice.
Video is never enough

3. Feedback

Self-study needs feedback more than anything else. You need to find a way of supporting learners. It’s a lot of work to do this without any automation, so try to use a platform that does this well. It may be automatic scoring of simple tests but at a higher level, platforms automate more sophisticated personalised learning. It’s not just subject-matter feedback but motivational feedback. This matter more at a distance. In Universities, proven adaptive learning systems and entire courses are available.
Adaptive learning

4. Re-use

Students commonly use Google, YouTube, Wikipedia and other learning resources, such as Khan Academy, Oak Academy, Picmonic and Duolingo for learning. Make this part of your curation process. Don’t think you have to do everything from scratch. Other people have created online experiences that are likely to be better than anything you can do, so use them. We have to get over the idea that all lessons have to be built from scratch by every teacher and lecturer.

5. Data-led

Make sure your organisation has a platform that gathers data about your learners, At the first level, descriptive data about who does what and when. At the second level it should also do some analysis, namely who is doing badly and needs help and what things are not working. At the fourth level data should be predictive, telling you what students should be doing next and at the fourth level prescribing and automating that process. Through personalised and adaptive learning.  This takes the workload off individual teachers, lecturers, schools, Universities.
Learning analytics

6. Technology

You need to know what your students tech context is. An audit is a must. And don’t go buying tablets and falling for that ‘device fetish’ thing. Know what they have and can use, as well as their bandwidth and physical context. Many more students have smartphones than desktop computers and laptops. Above all, don’t go all negative on the ‘digital divide’. Quantify the problem and deal with it. Make sure you’re using a platform that works on mobile and all the main browsers and operating systems. Use whatever platform your school or University uses and recommends. Don’t go UDI on this.
Device fetish

7. Comms

Don’t use the language of the classroom for self-study. Naming online learning a virtual ‘classroom’ is unhelpful. E-learning sound too old school. ‘Homework’ is what you used to do before computers with pen and paper. Us the language of the technology and channels you’re using. Chat, post, text, share… Then communicate a ‘lot’ with students. You need to put them at ease, motivate, and encourage. You also have to schedule, nudge and remind. Be precise in telling them what you expect and what they have to do in terms of work, time, dates, deadlines, formats and ways of submitting effortful learning. Then give good feedback – this last one really matters.
Students have always studied at home, with ‘homework’ and revision for exams. Blended learning just ups our game on this. See online learning as a holistic approach to school, college and University teaching. In fact, when you shift from ‘homework’ to ‘online learning’ you simply up the efficacy of self-study and raise attainment for all. I’d drop the word ‘home-WORK’ as evidence suggests it demotivates students. Seeing self-study as part of your normal school or University life surely encourages autonomy and prepares you better for life.

Conclusion

Necessity is the mother of invention. I hope that this human tragedy  allows us to transform the learning landscape to be better and more inclusive through Blended Learning. We have an opportunity to use contemporary technology reduce teacher workload and improve learning at the same time.

Monday, July 13, 2020

Bogus pyramids: Learning methods, Maslow and Bloom

Pyramids seem to attract a lot of attention among conspiracy theorists and peddlers of books about alien mysteries and new age nonsense. Similarly, they pop up in education and training. It is rare to see an educational or training theory course or PowerPoint without a pyramid, preferably with rainbow colours. 
Indeed, once you catch on to the pyramid scheme trick, you see them everywhere. If there’s a theory to be peddled, usually simplistic and overly-hierarchical, ignoring the real complexities of the theory, someone will have turned it into a pyramid. There are Leadership pyramids (tons), Pyramids of Success, Competency Pyramids, Values Pyramids, even Inverted Pyramids to show reversed hierarchies. This is not to say that such images are always wrong. They can do a passable job in getting the broad brush-strokes of a theory across. The problem is that they haul in all sorts of preconceptions and fictions with them, like progression and hierarchy. Rarely do they actually represent the complexity of a theory or reality.
Let’s take just three, perhaps the most commonly used pyramids to unpack the problem. One is a fake (Learning methods),  One, Maslow’s Hierarchy of needs is badly researched, simplistic and has two versions. One, Bloom’s hierarchy, also has two versions and both are misleading.

The pyramid that never was

I have seen this in presentations by the CEO of a large online learning company, Vice-Chancellor of a University, Deloitte’s Bersin, and in innumerable keynotes and talks over many years. It is a sure sign that the speaker has no real background in learning theory and is winging it. Still a staple in education and training, especially in 'train the trainer' and teaching courses, a quick glance is enough to be suspicious.

The whole mess has its origins in a book by Edgar Dale way back in 1946. There he listed things from the most abstract to the most concrete: Still pictures, Visual symbols, Verbal symbols, Radio recordings, Motion pictures, Exhibits, Field trips, Demonstrations, Dramatic participation, Contrived experiences, Purposeful experiences and Direct. In the second edition (1954) he added Dramatised experiences through Television and in the third edition, heavily influenced by Bruner (1966), he added enactive, iconic and symbolic.
But let’s not blame Dale. He admitted that it was not based on any research, only a simple intuitive model and he did not include any numbers. It was, in fact, simply a gradated model to show the concreteness of different audio-visual media. Dale warned against taking all of this too seriously, as a ranked or hierarchical order. Which is exactly what everyone did. He actually listed the misconceptions in his 1969 third edition p128-134. So the first act of fakery was to take a simple model, ignore its original purpose, and the authors warnings, and use it for other ends.

Add fake numbers

The cone was flipped on its side and turned into a serious looking histogram. First up, why would anyone with a modicum of sense believe a graph with such rounded numbers? Any study that produces a series of results bang on units of ten would seem highly suspicious to someone with the most basic knowledge of statistics. The answer, of course, is that people are gullible, especially to messages that appeal to their intuitive beliefs, no matter how wrong. The graph almost induces confirmation bias. In any case, these numbers are senseless unless you have a definition of what you mean by learning and the nature of the content. Of course, there was no measurement – the numbers were bogus.

Add Fake Author



At this point the graph was quite simply sexed up by add some academic seasoning, a seemingly genuine citation from an academic and Journal. This is a real paper, about self-generated explanations, but has nothing to with the fake histogram. The lead author of the cited study, Dr. Chi of the University of Pittsburgh, a leading expert on ‘expertise’, when contacted by Will Thalheimer, who uncovered the deception, said, "I don't recognize this graph at all. So the citation is definitely wrong; since it's not my graph." Serious looking histograms can look scientific, especially when supported by bogus academic credentials.

Add new categories

The fourth bit of fakery was to add ‘teaching others’ to the end, topping it up to, you guessed it – 90%. You can see what’s happening here, flatter teachers and teaching, and they are more likely to buy it. They also added the ‘Lecture’ category on at the front, to reel in academics. In fact, the histogram has appeared in many different forms, simply altered to suit the presenter's point in a book or course. This one is from Josh Bersin’s book on Blended Learning. It is easy to see how the meme gets transmitted when consultants tout it around in published books, courses and PowerPoints. What happened here was that Dale’s original cone concept went through several levels of fakery, to turn it from a description of media, to the prescription of methods.

Final coloured pyramid


The next bit of fakery, was to go full technicolour and turn it into a pyramid. Going back to Dale’s pyramid but with the fake numbers and new categories added, it was a cunning switch. The odd that complex and very different things lie in a linear sequence one after the other. It is essentially a series of category mistakes, as it takes very different things and assumes they all have the same output – learning. In fact, learning is a complex thing, not a single output. A good lecture may be highly motivating, there are semantic tasks that are well suited to reading and reflection, discussion groups may be useless when struggling with deep and complex semantic problems like maths and so on. Of course, the coloured pyramid makes it look more vivid and real, all too easy to slot in, as a simplistic bromide, to a lazy 'train the trainer' or 'teacher training' courses.
What is damning is that this image and variations of the data have been circulating in thousands of PowerPoints, articles and books since the 60s. Will Thalhemer’s original work did much to uncover this fakery. Investigations of these graphs by Kinnamon (2002) found dozens of references to these numbers in reports and promotional material. Michael Molenda (2003), did a similar job. Their investigations found that the percentages have often been modified to suit the presenter’s needs. Just search on Google for The Learning Pyramid and click ‘Images’ and you’ll find page after page of variations. This is a sorry tale of how a simple model published with lots of original caveats can morph into a meme that actually lies about the author, the numbers, adds categories and is uncritically adopted by educators and trainers.

Maslow’s misleading pyramids

Maslow (1908 - 1970) is almost synonymous with his hierarchy of needs. The author is invariably mentioned in the same breath as his hierarchy, which is just as invariably displayed as a pyramid.  It has been a staple for decades as a first step in educational theory, teacher training, train the trainer and management courses. Yet few who put it centre-stage in their PowerPoints, realise that Maslow never created this coloured pyramid. It never appeared in any of his published works. Fewer still question its validity.
His basic concept of prioritising needs was first published in 1943, in his paper A Theory of Human Motivation (1943) in the Psychological review. Then, based on a rather odd, selective and cursory analysis of successful people, his full-milk, hierarchical theory was published in his 1954 book Motivation and Personality.  It was here that he pared back learning to a hierarchy of basic human needs and desires. His aim was to uncover the precursors to what motivates people to learn.
So how did we end up with a pyramid? There were several sleights of hand here. Douglas McGregor, at MIT’s Sloane School of Management took Maslow’s general ideas and applied them to management. In doing so, he simplified and distilled Maslow’s ideas, removing much of the subtlety. Note that he did not invent the pyramid, that came later with Keith Davis, who in his book on management, represented Maslow’s ideas as a right-angles triangle, with a pinnacle. That was the first step, the second was in the psychologist Charles McDermid’s article How money motivated men, where the pyramid first appeared. Note that there was a rather odd method to his madness, as he thought this was a way of pushing profits. 
To be fair to Maslow, although oddly researched, with celebrity sources, his work was far more nuanced than the pyramid suggests. His focus was very much on the concepts of self-actualisation and transcendence, and whatever one thinks about those as concepts or theories, they are not magic projections off the top of a primitive pyramid.


The bottom four are all ‘deficit’ or ‘D-needs’. As each of these needs are satisfied, he individual reaches homeostasis and the feeling or need to fulfill that D-need stops, so that one can proceed to the next.
If they are not present, you will feel their absence and yearn for them. When each is satisfied, you reach a state of homeostasis where the yearning stops. It is simple and has an intuitive appeal.
The last, self-actualization, does not involve homeostasis, but once felt is always there. Maslow saw this as applying to only a few people, whose basic four levels are satisfied, leaving them free to look beyond their deficit needs. He claimed to have used a qualitative technique called ‘biographical analysis’ where he looked at high achievers and found that they enjoyed solitude, close relationships with a few rather than many, autonomy and resist social norms. Spontaneity, simplicity and respect for others were other characteristics.
What is rarely known is that it was discovered that Maslow, in 1970, the year of his death, changed his original thoughts, developed in the 1950s, to a more complex model of needs. In unpublished work, ‘knowing and understanding' and 'aesthetic' were discussed. This upgraded version of his theory was largely ignored, as the earlier model had become so deeply embedded in teacher and trainer training courses. Anyone familiar with epistemology and aesthetics will immediately see the problem. Both are notoriously difficult to define. In any case, Maslow never actually published the first or updated motivational model as pyramids. It never appeared in any of his published or unpublished writings. 

Although hugely influential, his work was never tested experimentally and when it was, from the 70s onwards, was found wanting. Empirical evidence showed no real evidence in terms of a strict hierarchy, nor the categories, as defined by Maslow. 
His ‘biographical analysis’ was armchair research. based on a self-selected group of just 18 people and in itself is defined in terms of a set of subjective criteria. . His list of 18 self-actualized people included Einstein, Mother Teresa, Gandhi, Beethoven, Lincoln, Eleanor Roosevelt and, of course - Abraham Maslow! He only included two women in his list of self-actualised people, bizarrely, the anti-Semitic Elanor Roosevelt and nun Mother Teresa. It is hard to imagine that a full theory of human nature could be built upon such strange and extreme examples. One thing that helped Maslow become the guru of motivation was that his books were very popular and he was part of a sixties movement that helped promote his views. He was friends with people like Timothy Leary (Maslow’s daughter Ellen was Leary’s research assistant). Linda Sargent Wood writes in A More Perfect Union about the rise of these holistic, utopian visions for humanity. She shows that these were largely populist, and not research or evidence, based movements. 
Kenrick et al. (2010) found huge variance in Maslow's so-called self-actualised people, showing divergence rather than convergence. As there is no control group, this is simply circular. Self-actualised people are selected by him, then used as evidence for self-actualisation.  The self-actualisation theory is therefore largely subjective. 
An even weaker aspect of the theory is its strict hierarchy. It is clear that the higher needs can be fulfilled before the lower needs are satisfied, so the theory has been repeatedly falsified. There are many counter-examples and indeed. For example, creativity can atrophy and die on the back of success. Maslow himself felt that the lines were not that clear. In short, subsequent research has shown that his hierarchy is crude, as needs are pursued non-hierarchically, often in parallel. A different set of people could be chosen to prove that self-actualization was the result of, say, trauma or poverty (Van Gogh etc.). 
Subsequent research shows that real needs and motivations do not fall into this neat pyramid or hierarchy. For example Rutledge (2011) claims that complex social connections are needed for all of the assumed levels in the hierarchy and that it falls apart when this is taken into account. Typical of the many studies that show the irrelevance of the hierarchy is Tay and Diener (2011), where 60865 people from 123 countries were questioned on Maslow's needs. It showed that the hierarchy was quite simply wrong. The problem is that the reductive nature of the analysis ignores the much messier nature of motivation. In general, the whole idea has been abandoned in modern motivational theory. 
His hierarchy is often hauled into training programmes, without any real understanding of why and whether the theory is indeed correct, beyond some simple truisms. Its appeal seems to lie in the endless repetition of a clear and simply coloured pyramid, rather than any evidence or sophistication in terms of human nature. In fact, it is a hopeless caricature of human nature, one that is best avoided.
Indeed, apart from being fossilised as a component in bad teacher-training and train the trainer courses, it is hard to see how it has any real relevance to what teachers, trainers, lecturers or instructors actually do when they teach. It is clear that having somewhere to live, food to eat, friends, and feeling safe are important but not in the hierarchical or developmental way they are presented. As a teacher, or manager, one can recognize the basic needs of a person without recourse to the pyramid structure at all. Indeed, it may be misleading. Most sets of indicators for the wellbeing of children are more complex, sophisticated and do not fall into a simple hierarchy. There are many such schemas at international (UNICEF) and national levels. They rarely bear much resemblance to Maslow’s hierarchy.
Maslow has been almost omnipresent in education and training. However, it is not clear that his theory has had any real effect other than encouraging people to look at others as human beings, rather than subject to some instrumental manipulation. This is an entry from Maslow's own journal in 1962, “My motivation theory was published 20 years ago, & in all that time nobody repeated it, or tested it, or really analyzed it or criticized it. They just used it, swallowed it whole with only the most minor modifications”. He was right. It is not a hierarchy, was not tested and as a theory of human nature it is simplistic and banal. To argue that the theory, although wrong, is useful, as it promotes a holistic view of learners, employees, managers etc. is to open the door to any subjective theory that fits a prejudice. It seems to live on, not because it is validated, real or useful, largely, perhaps, because of the colourful triangle that looks great as a PowerPoint slide. It’s a false meme.
As if to confirm its status as meme not theory, more recently, the pyramid became an internet meme, when some wag added ‘Wi-Fi!’ to the bottom of the pyramid. Many other joke needs have since appeared.

This accidentally confirmed the truth, that the pyramid is actually a bit of a joke.

Bloom’s fictional pyramid

Bloom’s taxonomy

Benjamin Bloom (1913-1999) is famous for the most commonly used taxonomy in education and training. It includes three overlapping domains:

Cognitive (knowledge)
Psychomotor (skills)
Affective (attitude)

Bloom published this taxonomy in Taxonomy of educational objectives: The classification of educational goals. Yet it was not wholly Bloom’s work. The book was edited by him but the taxonomy came out of a series of conferences and the work of a committee of colleagues at the University of Chicago. These were published as three ‘handbooks’, in other words practical texts that bridged theory and practice.
In the 2001, 45 years later, Bloom’s student Lorin Anderson revised Bloom's taxonomy in A Taxonomy for Learning, Teaching, and Assessing: A Revision of Bloom's Taxonomy of Educational Objectives. Note that Bloom is neither an author nor contributor. The theory is expanded as psychology had shifted away from behaviourism towards cognitive psychology, so more recent theory informed the update. It is a complex framework that integrates knowledge with cognitive activities in learning. Far from being a simplistic pyramid, it lays out four dimensions; what is taught, how it taught, how it is assessed, and their alignment. It is a holistic and interconnected work. Importantly, in neither the original text by Bloom nor its revision by Anderson, did a pyramid appear.
It was never meant to be pure progress from lower to higher, it was more multidimensional. It is a practical, organizational structure more correctly represented in two dimensional tables, which is how they first appeared, so that one could match different dimensions. There is increasing spectrum of complexity not a hierarchy of value. Unfortunately, some like to reduce his work to word lists or represent the taxonomies as pyramids suggesting, both implicitly and sometimes explicitly, that knowledge, at the bottom, is inferior. It was devised to assist teachers and trainers to classify educational goals and plan and evaluate learning experiences. Unfortunately, the pyramid is about as far as most people get. They rarely dig deeper. Yet the actual theory and practical recommendations are lost in the pyramid representation, which not only simplifies but misrepresents the original theory and its updates.
This is how Bloom’s taxonomy commonly appears:

Yet, here it is straight from the original author’s mouth:
“The triangle does not appear in either (original or revised Bloom’s) Taxonomy. The triangular representation was quite likely designed by someone as part of a presentation made to educational practitioners.”
Lorin W. Anderson
Note: Lorin W. Anderson, recommends Daniel Willingham's diagram, as it puts knowledge in an overall and foundational position without invoking the hierarchy, progression and apex.




The pyramid is worrying, as a sophisticated theory and its even more sophisticated revision, were essentially bastardized to represent a hierarchy, in which one had to progress from one stage to another, whereas learning is far more complex with different cognitive processes interacting and intertwined with each other. This is not to say that there are no dependencies. There is a strong argument for seeing knowledge as foundational in these taxonomies.
Bloom published his now famous taxonomy of learning in 1956. Few realise that this taxonomy is now over 60 years old. There have been lots of taxonomies since then that slice and dice, many variations on existing categories. Indeed we've had dozens of taxonomies that sliced and diced in all sorts of ways. We've had Biggs, Wills, Bateson, Belbin and dozens more. We seem to have got stuck in the Bloom taxonomy. To be fair there have been good revisions, taking the knowledge nouns and unpacking them into verbs but the problem with taxonomies is their attempt to pin down the complexity of cognition in a list of simple categories. In practice, learning doesn’t fall into these neat divisions. It is a much more complex and messier set of cognitive processes, so attention has shifted to how learning meshes with memory and techniques that improve organisation, chunking, encoding, practice and recall.
Another danger is that instructionalists, like Gagne, take these taxonomies and attempt to design learning that matches these categories, destroying much of the more useful approaches which an understanding of brain science brings; such as cognitive overload, working memory limitations, top-down processing and so on. Learning theory has moved on in terms of a more detailed understanding of memory, which has put everything on a more empirical and scientific basis.

Conclusion

These three pyramids have turned into pyramid schemes, repeated, adapted, amplified and unquestioningly adopted. It gives you the illusion of science to sell your product, usually a talk, lecture or course. Most who use three pyramids, and there are many more, are completely unaware of the fakery, lack or research, variations and updates by the original authors or bogus representations of hierarchy and progression. They are images that become fossilized in books, handouts, PowerPoints. Social media now amplifies them, as a brightly coloured image acts as clickbait on many a post. 
The allure of the pyramid is its geometric simplicity, representation of hierarchy and suggestion of progression. Add some colour and it appeals to PowerPoint driven education and training. More than this, the pyramid suggests progression towards the peak as the apex of learning. It promotes a view that things at the bottom and less worthy than things at the top, which plays into the narratives that some educators like, such as 21st century skills. All three misrepresentations play this game, which is why they have proved popular. People like shortcuts, especially when they fit their views of the world.
What keeps all of this going is ‘intuition’, the feeling that it seems right. There are germs of truth, even some reasonable claims in all three of these pyramids, some more than others. Intuition then trumps reason, as you buy into the simplicity of the image, its hierarchy and progression. The sun progresses across the sky, so you assume that it goes round the earth, when, in fact things are a lot more complicated. In fact, the opposite is the truth. In all three cases; the fiction, armchair theory and reasonable taxonomy, the image becomes the established theory, when it is actually a fake, a caricature or a misleading representation.
This intuition is fueled by something else – confirmation bias. If you are a teacher, lecturer or professional in the learning field, a theory and image that puts you at the pinnacle of its presentation is flattering. In the learning pyramid, you become the end point, the goal in all this, as ‘teaching’ is the ultimate learning activity. In Maslow’s hierarchy, self-actualisation suggests that education is some sort of holy grail for the soul. In Bloom’s taxonomy, you reach a peak of creativity. It puts you at the very top, beyond reproach. Oddly, the reality is that it shows the learning game to be full of fake, poorly researched and simplistic theories and tools.
In the end, a combination of faked imagery and projected extra meaning by both the presenters and viewers of such images is a potent and saleable mix. Sadly, it is quality assured, taught and assessed. Practitioners become qualified on the back of bogus theory and practice. These three pyramids alone account for a massive and incalculable amount of wasted time and cost in education and training, not only of teachers but learners. Don’t be dazzled by colour and geometry. Question what is given and assumed as research and fact.
 “Finally, after 40+ years in the business, I am greatly dismayed that many educators get their information from oral presentations and secondary (and in some cases tertiary) sources. This practice tends to result in passing along half-truths and misinterpretations.”
Lorin W. Anderson
We can do no better than quote the above warning by the author of the revised Bloom’s Taxonomy, on the danger of visual misrepresentations of theory.

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