Your child comes home from school and tells you they had to read words like "tob" and "vig" today. Not real words. Made-up words. And you're thinking: why on earth would a teacher ask a child to read something that doesn't mean anything?

It's a fair question. It's also one of the most important things to understand about how reading development is actually measured.

The Problem with Real Words

When a child reads the word "cat" correctly, it feels like progress. And it might be. But it also might not be. Because there's no way to know, in that moment, whether the child actually blended the sounds /k/ /a/ /t/ together, or whether they simply recognized a word they've seen a hundred times before.

Young children are remarkably good at memorizing the shapes of familiar words. They learn to recognize "the" and "and" and "cat" the same way they recognize a stop sign: not by reading it, but by knowing what it looks like. This works for a while. It even looks like reading. But it isn't decoding, and decoding is what carries a reader forward when the words stop being familiar.

A nonsense word removes that possibility entirely. "Tob" can't be memorized. It can't be guessed from a picture. It can't be recognized from a story the child heard last week. The only way to read it is to look at the letters, say the sounds, and blend them together. That's it. There's no shortcut available.

A Window, Not a Trick

Nonsense words don't teach children to read fake words. That's a common worry, and it deserves a direct answer: no. Nonsense words are diagnostic. They reveal whether the decoding engine is actually running, or whether a child has been navigating early reading on memory and context alone.

This is exactly why assessments like DIBELS include a nonsense word fluency section. It's the cleanest measure available for isolating a child's true blending ability from everything else that can look like blending but isn't. A child who scores well on nonsense words is genuinely decoding. A child who struggles with them but reads familiar words fluently is likely relying on recognition strategies that will eventually hit a ceiling.

That ceiling tends to arrive around second or third grade, when the volume of new vocabulary outpaces what memory alone can handle. Children who decoded all along keep moving. Children who memorized start to stall. Nonsense words, as uncomfortable as they might feel, are an early signal of which path a child is on.

How Nonsense Words Build Real Readers

During the Word Nuts workout, real words and nonsense words appear side by side within the same rotation. "Sip" shows up. So does "sig." The child blends both the same way, and both are doing important work. The real words confirm that blending produces meaning. The nonsense words confirm that the blending itself is solid, independent of whether meaning arrives at the end.

That combination is highly effective, because it trains the child to trust the process rather than the outcome. A child who has blended dozens of unfamiliar sound combinations on the bolt doesn't freeze when they encounter an unfamiliar word in a book. They have a strategy. They trust the sounds. They know how to work through it.

And something remarkable happens as the system progresses into digraphs and more complex sound patterns. Children begin to distinguish, on their own, between combinations that form real words and combinations that don't. They'll blend "ship" and recognize it. They'll blend "thig" and know it isn't a word, but they'll decode it accurately anyway. That distinction is comprehension and decoding working together in real time. The child isn't just producing sounds anymore. They're listening to what they produce, checking it against what they know, and making a judgment.

That's not just blending. That's reading.

Michael Land is an education designer focused on early literacy, phonemic awareness, and sound-first reading systems.