The Science of Reading Simplified
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Can we talk about those moments when reading suddenly clicks for a student? You know the ones I mean – when a child who’s been struggling suddenly engages with a text because something in it connects to what they already know.
I had one of those moments with Marcus last week. He was trudging through a text about eagles until he connected it to the nature documentary his class had watched the day before. Suddenly, everything made sense.
That’s not just a happy coincidence, my friend. There’s fascinating research behind why this happens, and it’s all about building background knowledge. Let me walk you through why this matters so much for our kids.
One of my favorite researchers, Susan Neuman, puts it perfectly when she says “knowledge is comprehension in disguise.” I share this quote because it’s such an important shift in how we think about reading difficulties. When our students hit a wall with comprehension, our first instinct is often to drill down on more reading strategies. But sometimes what they really need is more knowledge about the topic.
Building background knowledge works like Velcro in the brain. Every piece of information creates tiny hooks that new information can stick to. The more hooks you have, the better new information sticks. That’s why building background knowledge becomes so powerful – it creates more places for new learning to connect.
I saw this with Sophia, a third grader I worked with last year. She struggled with grade-level texts until we spent three weeks building background knowledge about space exploration. As her knowledge grew, her comprehension soared – not because her decoding improved, but because she had context for what she was reading.
Let me tell you about a study that completely changed how I approach reading instruction. Back in the 1980s, researchers Recht and Leslie conducted what’s now known as the Baseball Study. They had students read about baseball and act out what they read with figures on a board. The results were eye-opening: kids who knew a lot about baseball understood the text better than stronger readers who didn’t know much about the sport.
I’ve seen this play out countless times in my intervention groups. Maria, who was reading below grade level, could tackle complex texts about soccer (her passion) with impressive comprehension. It wasn’t about reading skill – it was about her background knowledge in her area of interest.
When we focus on building background knowledge, we’re addressing a fundamental aspect of comprehension that strategy instruction alone can’t fix. Think about it – strategies help students navigate a text, but knowledge helps them understand what the text is actually about.
I know what you’re thinking – “This sounds great, but when am I supposed to fit this in?” I hear you. Let me share some practical ways to build background knowledge that I’ve seen work in real classrooms:
Connect the Dots: Start lessons with a quick “What do we already know?” conversation. Even just 3-5 minutes makes a difference. A second-grade teacher I worked with keeps a simple anchor chart that grows throughout each unit, creating a visual record of building background knowledge over time.
Stay in the Same Lane: Instead of hopping from topic to topic, give students time to develop deep knowledge. When the third graders were studying weather, they read stories about storms, did weather experiments in science, wrote weather reports, and even analyzed weather data in math. Everything connected, building background knowledge across subjects.
Mix It Up: Books are wonderful, but don’t stop there. Use videos, pictures, articles, podcasts – whatever you can get your hands on. One of my most reluctant readers became our resident expert on volcanoes after a strategic mix of National Geographic videos, simple articles, and hands-on experiments. Building background knowledge through multiple formats helps reach different learners.
Talk, Talk, Talk: Never underestimate the power of discussion for building background knowledge. When students talk about what they’re learning, they process information deeper and make connections. One fifth-grade teacher I coached dedicates 10 minutes a day to “knowledge talks” – and her students’ reading scores have improved significantly.
When Baltimore City Schools focused on building background knowledge systematically, teachers reported that students couldn’t stop writing. They were so excited about what they were learning that they wanted to share it all the time. One fourth-grade teacher noted, “They can’t stop writing. And they write all the time.”
I’ve seen similar results in the schools I support. When we prioritize building background knowledge, students don’t just understand texts better – they engage more deeply with them. They ask better questions. They make more connections. They remember more details. All because they have context for what they’re reading.
Look, I get it. When you’re juggling twenty-something different needs in your classroom, adding one more thing feels impossible. But here’s the beauty of building background knowledge – you can start small and integrate it into what you’re already doing:
Jessica, a fourth-grade teacher, started by simply adding one connected text to each unit. A year later, she had completely transformed her approach to literacy. Her students now expect and look forward to building background knowledge as part of their learning process.
Every time we help our students build background knowledge, we’re giving them more of those Velcro hooks I mentioned earlier. Each hook makes it easier for them to grab onto new learning. It’s not just about understanding today’s text – it’s about building the foundation for all future reading.
Natalie Wexler, author of “The Knowledge Gap,” explains that knowledge sticks best to related knowledge – like mental Velcro. When we intentionally focus on building background knowledge, we’re helping that Velcro grow stronger and more abundant.
As you plan for next week, think about one small way you could connect what your students are learning across subjects. Maybe it’s linking your read-aloud to your science unit, finding a poem about your social studies topic, or sharing a brief video that builds background knowledge about upcoming content.
Remember, building background knowledge doesn’t have to be one more thing on your plate – it can be your approach to everything already on your plate. It’s about making connections explicit, staying with topics long enough for deep learning, and helping students see how everything they learn connects to everything else.
We’re in this together, and I’d love to hear what you try. What small step might you take this week toward building background knowledge in your classroom?
Give teachers the science-backed tools they need to help every student become a confident reader.
I’m so glad you’re here!
You’ve noticed something isn’t quite right. A student who struggles during read-alouds, avoids writing, or works twice as hard for half the results. Your instincts are telling you something – but what’s next? Download my free 5 Silent Signs of Reading Struggle to identify what you’re seeing and know exactly what to do about it.
If you’re looking to dive deeper, these are the resources I find myself reaching for again and again in my own literacy journey.
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She reads every word correctly. Her fluency is solid — maybe even above benchmark. She doesn’t stumble, doesn’t hesitate, doesn’t ask for help. And then you ask her to tell you what the passage was about, and she stares at you like you’ve asked her to explain it in a language she doesn’t speak. Sound familiar?
It is read-aloud time, and the class is discussing a picture book about a child who moves to a new country. The conversation is rich. Students are connecting to the character, predicting what will happen, noticing the illustrator’s choices. Nadia is sitting quietly in the second row, looking at the pictures. Her teacher asks, “Why do you think Amelia feels nervous about her first day at school?”
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