Experts Have Better Organised Knowledge, Not More

I remember sitting in a windowless training room ten years ago, nodding politely while a consultant in a slim-fit suit used a laser pointer to explain the “cognitive architecture of learning.” He had a thirty-slide deck explaining exactly how schemas develop, filled with diagrams that looked more like subway maps than anything a human brain actually does. It was all very polished, very expensive, and utterly useless the moment I walked into a Year 9 history lesson with twenty-eight teenagers, three of whom were currently trying to see if a glue stick could stick to a ceiling tile.

I’m not here to give you more academic fluff or complex diagrams that require a PhD to interpret. Instead, I want to talk about what actually happens when you’re trying to help a student build a mental map of the Tudor period while you’re simultaneously trying to stop a chair from being thrown. We are going to strip away the jargon and look at the practical reality of building knowledge. I’ll show you how to create those mental hooks that actually stick, even when you’ve only got ten minutes of focus left before the bell rings.

Mental Frameworks and Memory Beyond the Textbook Theory

You’ll see plenty of papers on Jean Piaget cognitive theory that make it sound like children are little scientists performing controlled experiments in a lab. In reality, they’re just trying to make sense of a chaotic world. When we talk about mental frameworks and memory, we aren’t talking about some abstract, ethereal process. We’re talking about whether a Year 8 student can actually connect what they learned about the Industrial Revolution last term to the social changes we’re discussing today. If they don’t have that internal scaffolding, they aren’t learning; they’re just performing a very expensive version of mimicry.

In the theory books, you get all this talk about assimilation and accommodation—the idea that kids either slot new info into what they know or have to rewire their brains to fit it. That’s fine for a university seminar, but in a classroom of thirty, it looks different. It looks like a student staring blankly at a source because they don’t have the prerequisite knowledge to even begin the process. Building those cognitive structures in learning isn’t about fancy worksheets; it’s about giving them the mental hooks they need so the new information doesn’t just slide right off their brain like rain off a windowpane.

Assimilation and Accommodation in a Chaotic Classroom

Now, if we’re looking at the actual mechanics of how this works, we eventually run into Piaget. You’ll remember the terminology from your degree: assimilation and accommodation. In a textbook, these sound like clean, logical steps in a cognitive development stage. In a classroom of thirty kids with varying levels of prior knowledge, they look a lot more like a collision. Assimilation is when a student takes a new bit of info and slots it into an existing mental framework—it’s the easy win. But accommodation? That’s the hard graft. That’s when the new information doesn’t fit the old mould, and the student has to actually restructure their thinking to make sense of it.

The problem is that accommodation is exhausting. It takes a massive amount of cognitive load. If I walk into a Year 9 lesson and try to force a complex new concept onto a group that hasn’t even mastered the basics, I’m not teaching; I’m just watching them crash. You can’t expect them to rebuild their entire cognitive structure mid-lesson while you’re also trying to stop someone from throwing a glue stick across the room. Real learning happens in that messy gap where they realize their old way of thinking is broken, but you have to give them the breathing room to fix it.

Five ways to build schemas without losing your mind

• Stop teaching isolated facts; if you don’t give them a mental hook to hang a new piece of information on, it’s just going to slide right off their brain and onto the floor by period three.
• Use “concept mapping” as a survival tool, not a fancy art project—draw a messy web on the whiteboard that shows how today’s topic actually connects to what they learned last term, otherwise, it’s just more noise.
• Don’t underestimate the power of a “low-stakes” recap; five minutes of asking them what they remember from yesterday isn’t just a filler, it’s the glue that prevents their existing knowledge from crumbling.
• Watch out for the “illusion of competence” where they nod along because they recognize the words, but they haven’t actually integrated the concept; if they can’t explain the why behind a fact, the schema hasn’t actually formed.
• Prioritise “big ideas” over the minutiae of the specification; it is much better they walk away with a sturdy, slightly imperfect understanding of a core principle than a hundred disconnected dates they’ll forget by Friday.

The Reality Check: Making Schemas Work in the Real World

Stop treating schema building like a separate, fancy event; it’s really just the work of ensuring today’s new bit of information has a sturdy mental hook to latch onto before the bell rings and the kids have moved on.

If you don’t explicitly bridge the gap between what they knew last term and what you’re teaching this Tuesday, you aren’t building a framework—you’re just piling loose bricks on a floor that isn’t level.

Forget the high-level cognitive science jargon for a moment and focus on the basics: if they can’t categorise the new info within the context of what they already know, they haven’t learned it, they’ve just temporarily memorised it.

The Reality of the Mental Hook

We spend far too much time talking about schema development as if it’s this elegant, clinical process of architectural construction, but in a classroom of thirty kids with varying levels of focus, it’s much messier than that. A schema isn’t a blueprint; it’s a collection of mental hooks. If you haven’t given them a sturdy enough hook to hang today’s new, confusing concept on, that information isn’t going to settle into their long-term memory—it’s just going to bounce off them and hit the floor, leaving you to wonder why your perfectly planned lesson failed to land.

Ellery Mwangi-Selkirk

The Reality of the Mental Map

Look, we can spend all afternoon debating the nuances of Piaget or the cognitive load of working memory, but at the end of the day, schema development is just about helping a student find a place to put a new fact. It’s not about the flashy, colour-coded revision booklets or the high-tech interactive software that takes twenty minutes to set up. It’s about ensuring that when you walk into that room on a rainy Tuesday, you aren’t just throwing disconnected pebbles of information at them. You are helping them build a coherent structure—a mental scaffolding that allows them to actually make sense of what you’re saying before the bell rings and they’ve moved on to the next thing.

If you leave this room feeling a bit overwhelmed by the theory, don’t. Teaching isn’t about mastering every psychological construct; it’s about the small, repetitive wins. It’s about that moment when a student finally “gets” it because you finally gave them the right mental hook to hang the concept on. Focus on the foundations, be patient with the slow builders, and remember that real learning is a messy, non-linear process. You’re not just delivering a curriculum; you’re helping them build the maps they’ll use for the rest of their lives. Just keep building, one brick at a time.

About Ellery Mwangi-Selkirk

Most educational advice is written for a classroom that does not exist — twenty motivated pupils, unlimited preparation time, no behaviour to manage. I write for the room you are actually in. What retrieval practice looks like when marking is already three weeks behind, why the seating plan matters more than the starter activity, and which of the last decade's initiatives left anything behind. Nineteen years taught me that the good ideas survive contact with a wet Wednesday and the rest do not.