Why Some Struggling Readers Suddenly Take Off

Bridging the Gap to Reading Success

 Why Some Struggling Readers Suddenly Take Off

Effective reading comprehension requires a dual-track approach that simultaneously develops mechanical decoding skills and a robust palace of knowledge filled with advanced vocabulary. Because reading growth operates multiplicatively rather than additively, relying on single-track interventions like isolated phonics or abstract comprehension strategies inevitably creates a comprehension bottleneck. Educators and parents can successfully construct this mental bridge by conducting advanced read-alouds that utilize a specific five-step strategy to introduce Tier 2 and Tier 3 words before children can decode them independently. As students achieve automaticity through systematic practice, their brains connect these stored linguistic meanings directly to printed text, sparking a non-linear leap in literacy. Ultimately, building both foundational mechanics and rich background knowledge concurrently prevents academic drop-offs and ensures long-term reading success.

A Reading Sage explainer from The Joy Engine PRESENTATIOM SLIDES

The "miracle" that isn't

Every teacher who has run a real intervention has seen it. A child plods along for weeks, sounding out words one painful piece at a time, and then, almost overnight, they're reading chapter books and answering questions you didn't know they could answer. Parents call it a breakthrough. Administrators call it a miracle.

I call it a bridge getting finished.

In Reading Boot Camp, what looks like explosive growth is rarely sudden. Two things have been under construction the whole time, and the "take-off" is the moment they connect.

Two structures, one bridge

Bank one: the mechanics. Decoding, phonemic awareness, and the systematic, Orton-Gillingham-informed work of mapping sounds to print. This is the road in.

Bank two: the palace of knowledge. Vocabulary, background knowledge, and the habit of thinking in complex language. This is the destination.

Many struggling readers are building only one bank. Some drill phonics endlessly with no meaning-rich language alongside it. Others are bright, verbal kids with strong understanding and no reliable way to get print into their heads. Either way, the bridge is incomplete, and the child is stranded on one side.

Reading researchers have described this for decades. Gough and Tunmer's Simple View of Reading says that reading comprehension is the product of decoding and language comprehension. Notice it's multiplication, not addition. If either factor is near zero, the product is near zero, no matter how strong the other one is. Hollis Scarborough's Reading Rope shows the same thing: word recognition strands and language comprehension strands twisting together into skilled reading.

Here's what I want teachers and parents to notice: because the relationship is multiplicative, growth is non-linear. A child with a rich language base who has been held back by weak decoding doesn't improve a little at a time. When decoding crosses a threshold, all that stored-up understanding is released at once. It looks like a rocket launch, but the fuel was already in the tank.

The palace of knowledge: Tier 2 and Tier 3 words

Isabel Beck, Margaret McKeown, and Linda Kucan describe three tiers of vocabulary:

• Tier 1: everyday words (dog, happy, table)
• Tier 2: high-utility academic words that appear across subjects and mature texts (analyze, contrast, evidence, reluctant, consequence)
• Tier 3: domain-specific words (photosynthesis, peninsula, numerator)

Tier 2 and Tier 3 words are the bricks of the palace. They are also the words that separate easy early-grade text from the texts students meet in fourth grade and beyond, which is where so many struggling readers hit the wall that Jeanne Chall called the fourth-grade slump.

This is why, in Reading Boot Camp, we explicitly call out Tier 2 and Tier 3 words during read-alouds. A read-aloud lets a child hear complex language that is far above what they can currently decode. We pause, name the word, say it, define it in kid-friendly language, connect it to something they know, and use it again later in conversation. The child's ears are doing the work their eyes can't do yet.

So the meaning of reluctant is already living in their palace long before they can independently decode the word on a page.

Why automaticity is the final plank

Now add the other bank. David LaBerge and S. Jay Samuels explained that a reader has a limited pool of attention. If decoding eats it all, nothing is left for meaning. Linnea Ehri's work on orthographic mapping shows how repeated, successful decoding turns unfamiliar words into instantly recognized ones.

Picture the moment it clicks:

1. The child decodes reluctant accurately.
2. With practice, they recognize it automatically, with no sounding out.
3. Attention is freed up.
4. The word on the page meets the word already in their palace, and meaning flows.

That connection between a word the eyes can now read and a word the mind already owns is the bridge. When enough words connect, the child doesn't just read faster. They understand more, they enjoy it more, and they read more. Which leads to the next piece.

The take-off is amplified by reading volume

Keith Stanovich named the Matthew effect in reading: the rich get richer. Children who read well read more, which builds vocabulary and knowledge, which makes reading easier. Cunningham and Stanovich later showed how much reading volume contributes to vocabulary and knowledge growth over time.

Knowledge matters in its own right, too. In a well-known study by Recht and Leslie, weaker readers who knew a lot about baseball outperformed stronger readers who knew little when reading about a baseball game. What a child already knows can matter as much as how well they decode.

Once the bridge is open, the Matthew effect kicks in. This is the second reason growth feels explosive: the early gains compound.

What this means in practice

For teachers: Don't choose between decoding and knowledge. Run both tracks every day.

• Teach decoding systematically and explicitly.
• Read aloud above grade level and call out Tier 2 and Tier 3 words on purpose.
• Revisit those words in discussion, writing, and play (riddles, jokes, songs, and games all count).
• Build fluency through repeated, successful reading until it becomes automatic.

For parents: Your child's understanding is often far ahead of their reading. Keep reading aloud to them even when they can read on their own. Talk about big words at the dinner table. Their "palace" is growing every day, even when their reading scores aren't moving yet.

For administrators: Be wary of programs that only drill one bank. Isolated phonics without language-rich instruction, or "comprehension strategies" without decoding, leaves the bridge half built.

The honest caveat

Not every child takes off, and not on the same timeline. Some need far more repetition, especially dyslexic readers building pathways through lots of practice. Take-off is a pattern we see when both banks are being built well, not a guarantee. Where it does happen, though, the cause is usually not magic. It's the quiet accumulation of both kinds of work, until the two sides finally meet.

The takeaway

Explosive growth is just a bridge, finally connected.
Build the road (decoding, fluency, automaticity). Build the palace (Tier 2 and Tier 3 vocabulary, knowledge, language). Then watch what happens when they meet.

Policy Whitepaper: Beyond Single-Track Interventions: The Pedagogical Case for Systemic Dual-Track Literacy Instruction

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1. Executive Rationale & Structural Flaws of Single-Track Interventions

1.1 Context and Strategic Importance

Reading literacy stands as the foundational imperative of any educational system, serving as the primary doorway through which all subsequent academic success is realized. Despite significant financial and institutional investments in reading intervention programs, student outcomes frequently plateau or fail to demonstrate long-term sustainability. The core vulnerability of traditional literacy planning lies in a fundamental design flaw: the reliance on single-track intervention paradigms. Whether an institution invests exclusively in isolated foundational phonics or prematurely forces abstract comprehension strategies, single-track models treat reading as a monolithic skill rather than an integrated cognitive system. To secure long-term academic growth and prevent widespread achievement barriers, educational policy must pivot away from isolated methodologies toward a systemic, dual-track instructional framework that constructs decoding mechanics and high-level knowledge concurrently.

1.2 Structural Failure Modes of Single-Track Interventions

Single-track interventions inevitably fail because they isolate components of reading that are functionally interdependent.

• Isolated Phonics Instruction: When programs drill the mechanics of sound-to-print mapping without embedded, language-rich context, students may learn to sound out words in isolation but remain stranded without the vocabulary or background knowledge needed to derive meaning. The mechanics are built, but the child has no destination once print is converted into speech.
• Isolated Comprehension Strategy Instruction: Conversely, attempting to teach high-level comprehension strategies to students who lack automatic decoding mechanisms creates a structural bottleneck. Verbal, highly capable children may possess advanced reasoning skills, but without a reliable method for getting print off the page and into their heads, comprehension strategies remain inaccessible during independent reading.

The systemic failure modes of these unitemized approaches are contrasted below:

Single-Track Phonics-Only Approaches	Single-Track Comprehension-Only Approaches
Theoretical Assumption: Literacy is achieved solely by mastering sound-to-print mechanics, phonemic awareness, and decoding sub-skills in isolation.	Theoretical Assumption: Reading is driven primarily by high-level reasoning, background exposure, and strategy application, independent of explicit decoding instruction.
Operational Gaps: Drills phonics mechanics endlessly without exposing students to background knowledge, rich Tier 2/3 vocabulary, or complex linguistic structures.	Operational Gaps: Teaches abstract comprehension strategies while failing to provide systematic, explicit instruction in phonemic awareness and sound-to-print mapping.
Failure Outcome (Mechanical Stranding): Students can sound out words slowly, but fail to comprehend mature text because they lack the vocabulary and mental models required to extract meaning.	Failure Outcome (Access Stranding): Bright, articulate students possess high oral language comprehension but cannot independently access print because decoding consumes all available cognitive energy.

1.3 The Multiplicative Imperative of the Simple View of Reading

The failure of single-track approaches is validated by Philip Gough and William Tunmer’s foundational model, the Simple View of Reading. Gough and Tunmer conceptualized reading comprehension ($R$) not as an additive sum of its components, but as the mathematical product of Decoding ($D$) and Language Comprehension ($C$):

$$R = D \times C$$

The mathematical implications of this formula are absolute. Because the relationship between decoding and language comprehension is multiplicative rather than additive, a near-zero value in either component results in a near-zero product for overall reading comprehension:

• If a student possesses high language comprehension ($C = 0.90$) but near-zero decoding skills ($D = 0.10$), total reading comprehension is severely compromised ($R = 0.09$).
• If a student develops strong decoding mechanics ($D = 0.90$) but lacks background knowledge and vocabulary ($C = 0.10$), reading comprehension remains similarly capped ($R = 0.09$).

Institutional strategies that fund or mandate only one track ensure that the missing variable acts as a mathematical floor, severely limiting overall student literacy performance. Understanding these systemic failure modes requires a deeper examination of human cognitive architecture and reading development frameworks.

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2. Cognitive Architecture & Theoretical Framework of Dual-Track Literacy

2.1 Context and Strategic Importance

To design reading interventions that produce sustainable literacy performance, policy planners and school administrators must look beyond superficial performance metrics and evaluate the cognitive load placed upon developing readers. Effective policy design requires an understanding of how working memory constraints, word recognition mechanics, and language processing systems interact within the human brain. Without grounding systemic policies in established cognitive architecture, school systems risk implementing programs that inadvertently overload student cognitive capacity.

2.2 The Two-Bank Architectural Model ("The Bridge Metaphor")

Reading development can be conceptualized as constructing a bridge across a wide river, requiring two distinct structural foundations to meet in the center:

• Bank One: "The Road In" (Mechanics & Access)
  • Core Elements: Phonemic awareness, systematic decoding, and Orton-Gillingham-informed sound-to-print mapping.
  • Function: Establishes the physical access route from visual print to spoken language.
• Bank Two: "The Destination" (The Palace of Knowledge)
  • Core Elements: Rich Tier 2 and Tier 3 vocabulary, domain background knowledge, and complex language processing.
  • Function: Builds the mental architecture where meaning, reasoning, and conceptual understandings reside.

When interventions treat these banks as mutually exclusive, students become stranded. A child engaged exclusively in isolated phonics builds a road that leads nowhere. A highly verbal child given only comprehension strategies stands before a theoretical palace they cannot physically enter. The moment of reading "take-off" occurs exclusively when both banks are systematically constructed and structurally connected, allowing stored oral understanding to meet fluent visual print recognition.

2.3 Theoretical Integration: Scarborough's Rope & Cognitive Load Theory

The necessity of dual-track alignment is reinforced by Hollis Scarborough’s Reading Rope, which illustrates how two independent core clusters of strands—Word Recognition strands (phonological awareness, decoding, sight recognition) and Language Comprehension strands (background knowledge, vocabulary, language structures, verbal reasoning, literacy knowledge)—must continuously twist together to form skilled, fluent reading.

The cognitive necessity of this integration is explained by David LaBerge and S. Jay Samuels' theory of limited attention. The human brain possesses a finite pool of working memory and attentional capacity during task execution. As a conceptual heuristic derived from LaBerge and Samuels' model, this cognitive trade-off can be represented as:

$$\text{Total Cognitive Attention Pool} = \text{Decoding Energy} + \text{Comprehension Energy}$$

If a reader lacks automatic decoding mechanics, the act of laboriously sounding out words consumes the entire cognitive pool. Consequently, zero attention remains for meaning extraction, context evaluation, or high-level reasoning.

2.4 Orthographic Mapping and Automaticity as the Connecting Plank

To prevent cognitive overload, the reader must transition from slow, conscious decoding to instant word recognition. This transition is governed by Linnea Ehri’s research on orthographic mapping. Through systematic, explicit sound-to-print practice, the brain binds letter sequences to phonological structures in memory, turning unfamiliar written words into instantly recognized visual representations.

As orthographic mapping takes hold, the student achieves automaticity. Automaticity reduces the cognitive cost of decoding to near zero, freeing the limited attention pool. The eye sweeps across the page, instant visual recognition takes place, and the word on the page immediately connects with the meaning already stored in the student's mental palace of knowledge. With these cognitive mechanisms established, attention must turn to how the "Palace of Knowledge" is systematically built during early childhood.

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3. The "Palace of Knowledge" & Vocabulary Acquisition Dynamics

3.1 Context and Strategic Importance

While decoding mechanics provide the physical entry point to print, academic success depends on the breadth and depth of a student’s vocabulary and background knowledge. Early-grade vocabulary acquisition serves as strategic insulation against late-elementary academic drop-offs. Systematically building domain knowledge in early grades is a primary lever for educational equity, ensuring that students from all socio-economic backgrounds possess the linguistic currency required to comprehend advanced academic texts.

3.2 Vocabulary Stratification and Mitigating the "Fourth-Grade Slump"

To build language comprehension systematically, educators must categorize vocabulary using the framework established by Isabel Beck, Margaret McKeown, and Linda Kucan:

The Three Tiers of Vocabulary

• Tier 1: Everyday Words
  • Definition: Basic, high-frequency conversational words acquired naturally through environmental exposure.
  • Examples: dog, happy, table
• Tier 2: High-Utility Academic Words
  • Definition: Multi-domain words that appear frequently across written, mature academic texts and cross-disciplinary subjects.
  • Examples: analyze, contrast, evidence, reluctant, consequence
• Tier 3: Domain-Specific Words
  • Definition: Low-frequency words specific to isolated academic disciplines, topics, or fields of study.
  • Examples: photosynthesis, peninsula, numerator

Tier 2 and Tier 3 vocabulary words function as the structural "bricks" of knowledge. A failure to build this vocabulary reservoir during early childhood leads directly to what Jeanne Chall identified as the "fourth-grade slump." In grades K–3, instructional texts rely primarily on simple syntax and Tier 1 vocabulary. In fourth grade, instructional materials shift dramatically toward mature, domain-dense content. Students who lack Tier 2 and Tier 3 vocabulary encounter a steep comprehension wall.

To bypass this barrier, institutions must leverage the principle of "storing meaning ahead of decoding." Through systematic oral read-alouds of texts that are well above a child's independent decoding capabilities, children process complex language through their ears years before their eyes can decode those same words on paper. When a word like reluctant is decoded years later, the mind immediately links the visual print to an already established concept.

3.3 The Primacy of Knowledge: The Recht & Leslie Empirical Synthesis

The impact of stored knowledge on reading comprehension was demonstrated in the classic empirical study by Donna Recht and Lauren Leslie. The researchers evaluated students across varying decoding abilities and domain knowledge levels on their comprehension of a complex text describing a baseball game.

Reader Profile Category	Domain Knowledge Level	Decoding Ability Level	Comprehension Performance Outcome
High Knowledge / Weak Decoders	High (Baseball Expertise)	Weak (Low Skill)	High Comprehension (Outperformed strong decoders lacking domain knowledge)
High Knowledge / Strong Decoders	High (Baseball Expertise)	Strong (High Skill)	High Comprehension (Optimal performance across all measures)
Low Knowledge / Strong Decoders	Low (No Baseball Expertise)	Strong (High Skill)	Low Comprehension (Unable to compensate for missing domain background)
Low Knowledge / Weak Decoders	Low (No Baseball Expertise)	Weak (Low Skill)	Lowest Comprehension (Severe failure across both dimensions)

The empirical synthesis reveals that domain knowledge acts as a powerful equalizing force across reader skill levels. Specifically, weak decoders with high domain knowledge about baseball significantly outperformed strong decoders with low domain knowledge about baseball. Prior background knowledge and vocabulary can equal or exceed raw decoding ability in driving text comprehension. Decoding provides physical access to text, but knowledge drives actual understanding.

3.4 Operationalizing Knowledge Building: The Explicit Five-Step Read-Aloud Protocol

To operationalize vocabulary building during oral read-alouds using advanced, above-grade-level texts, educators and caregivers must execute an explicit five-step protocol upon encountering a target Tier 2 or Tier 3 word:

1. Pause: Halt reading immediately upon reaching the target Tier 2 or Tier 3 word.
2. Name and Say: Articulate the target word clearly and explicitly, ensuring accurate phonological exposure.
3. Define: Provide a simple, kid-friendly definition in accessible language.
4. Connect: Link the concept directly to prior student knowledge, experiences, or familiar context.
5. Use: Re-engage and actively use the word in subsequent conversations, discussions, and instructional contexts.

By systematically executing this protocol, complex vocabulary is locked into memory long before independent print decoding occurs. This accumulation of knowledge creates non-linear compounding effects as children progress through school.

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4. Non-Linear Growth Trajectories & Compounding Systemic Effects

4.1 Context and Strategic Importance

Educational administrators and program evaluators frequently misinterpret student performance data because they evaluate dual-track literacy interventions using linear metrics. Early decoding drills and vocabulary acquisition often show minimal immediate changes on standardized reading assessments. However, literacy growth operates along a non-linear trajectory. Policy planners must understand the underlying compounding dynamics to evaluate intervention efficacy accurately and sustain institutional support during periods of latent growth.

4.2 The Matthew Effect and Compounding Gain Dynamics

The trajectory of reading growth is governed by Keith Stanovich’s application of the Matthew Effect to education: "the rich get richer and the poor get poorer." Students who read well read more, which expands their vocabulary and domain knowledge, making subsequent reading easier and more enjoyable.

As expanded by Anne Cunningham and Keith Stanovich, reading volume directly accelerates vocabulary acquisition and domain knowledge over time. This compounding dynamic explains why reading progress often presents as a sudden "take-off" (the "miracle that isn't"):

• Phase 1: The Latent Building Phase: The child builds Bank One mechanics (decoding, phonemic awareness) while simultaneously storing Tier 2 and Tier 3 vocabulary in Bank Two via oral read-alouds. To an outside observer, reading performance appears static or slow because the bridge is not yet connected.
• Phase 2: The Threshold Crossing: The student achieves a critical mass of orthographic mapping and decoding automaticity, freeing working memory capacity.
• Phase 3: Explosive Unlocking: Stored oral understanding is unlocked across printed text. The child rapidly transitions to complex chapter books, presenting as an overnight breakthrough when it is actually the planned completion of the cognitive bridge.

4.3 Strategic Policy Caveats: Variable Timelines and Neurodivergence

While dual-track growth trajectories are highly effective, policy planners must avoid expecting uniform execution timelines across all student cohorts:

• Neurodivergent Considerations: Dyslexic readers and students with severe phonological processing challenges require significantly more repetition, explicit Orton-Gillingham mapping, and extended practice to build required neural pathways.
• Implementation Realities: Non-linear gains are a predictable population-level pattern when both banks are built systematically, not an instantaneous guarantee for every individual on identical schedules.

Administrators must resist abandoning dual-track interventions prematurely when immediate linear gains are not visible, recognizing that latent cognitive structural work precedes visible performance surges.

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5. Strategic Stakeholder Action Matrix & Systemic Recommendations

5.1 Context and Strategic Importance

Transitioning from ineffective single-track interventions to a systemic dual-track literacy framework requires coordinated execution across all levels of the educational ecosystem. District mandates, classroom routines, and home environments must align around building decoding mechanics and domain knowledge concurrently.

5.2 Stakeholder Responsibility Framework

1. School and District Administrators

• Curriculum Adoption Policies: Mandate core and supplemental literacy curricula that explicitly integrate systematic decoding mechanics with domain-rich knowledge building.
• Eliminate Single-Track Programs: Phase out interventions that rely exclusively on isolated phonics drills without meaning-rich context, as well as programs that teach abstract "comprehension strategies" in the absence of explicit decoding instruction.
• Program Evaluation Protocols: Evaluate literacy tools based on their dual-track alignment, measuring both word recognition systems and vocabulary/knowledge development.

2. Classroom Educators

• Daily Dual-Track Execution: Allocate daily instructional time to both foundational mechanics and advanced language acquisition; never sacrifice one track for the other.
• Systematic Decoding & Advanced Read-Alouds: Teach phonics explicitly and systematically while conducting daily oral read-alouds using texts above students' independent decoding levels, deliberately targeting Tier 2 and Tier 3 vocabulary.
• Fluency & Vocabulary Reinforcement: Build fluency through repeated, successful student reading until automaticity is achieved. Reinforce new vocabulary across multiple modalities, including structured discussions, writing tasks, and interactive play (riddles, jokes, songs, and language games).

3. Parents and Caregivers

• Sustained Oral Read-Alouds: Continue reading complex, engaging books aloud to children even after they learn to read print independently.
• Conversational Language Enrichment: Actively incorporate "big words" (Tier 2 and Tier 3 vocabulary) into daily household routines and dinner table conversations, discussing word meanings in context.

5.3 Summary Synthesis Matrix

Dual-Track Systemic Alignment

Stakeholder Group	Core Track 1 Action<br>(The Road / Decoding Mechanics)	Core Track 2 Action<br>(The Palace / Knowledge & Vocabulary)
School & District Administrators	Adopt explicit, systematic phonics curricula; eliminate non-decodable strategy-only programs.	Eliminate content-barren reading programs; mandate knowledge-rich, domain-building curricula across K–5.
Classroom Educators	Deliver daily, systematic phonics and sound-to-print mapping; build fluency to automaticity via repeated reading.	Conduct daily read-alouds above grade level; apply the 5-Step Vocabulary Protocol; reinforce words in writing and play.
Parents & Caregivers	Support daily decoding practice and listen to early readers sound out decodable print.	Read complex books aloud past independent reading age; integrate Tier 2/3 "big words" into home conversations.

Conclusion

Explosive student reading growth is neither accidental nor miraculous. It is the deliberate, predictable outcome of systematically building a child's decoding mechanics and knowledge base simultaneously, maintaining dual-track alignment until the two sides connect. By committing institutional resources to both the road of decoding and the palace of knowledge, policy makers, educators, and families can establish a reliable bridge to lifelong skilled reading. 

In reading development, **Tier 2** (high-utility academic words like *analyze*, *evidence*, and *reluctant*) and **Tier 3** (domain-specific words like *photosynthesis* and *peninsula*) vocabulary words play several key roles in comprehension:

* **Serving as the "bricks" of knowledge:** They act as the foundational building blocks for a student's "palace of knowledge," allowing them to think in and understand complex language.

* **Preventing the "fourth-grade slump":** Tier 2 and Tier 3 words mark the boundary between simple early-grade texts and the mature, subject-specific reading students meet in fourth grade and beyond. Building a strong grasp of these words helps readers transition smoothly without hitting a comprehension barrier.

* **Storing meaning ahead of decoding:** Through oral read-alouds and explicit instruction, children can learn and store the meanings of Tier 2 and Tier 3 words long before they are able to sound them out on paper.

* **Unlocking comprehension once decoding becomes automatic:** Reading comprehension relies on both decoding and language comprehension. When a child develops automaticity in sounding out a word, the word on the page connects directly with the meaning already stored in their mind, allowing full comprehension to flow.

During read-alouds, teachers and parents can intentionally call out Tier 2 words using texts above a child's independent decoding level, allowing their ears to process complex language that their eyes cannot yet read on a page.

The sources outline an explicit **five-step strategy** to use when encountering a word during a read-aloud:

* **Pause** reading when reaching the word.

* **Name and say** the word clearly.

* **Define it** in kid-friendly language.

* **Connect it** to something the child already knows.

* **Use it again later** in regular conversation.

To help lock these words into a child's memory bank, the sources recommend continuing to reinforce them in classroom and home environments:

* **In the classroom:** Revisit new vocabulary through discussion, writing, and play, including riddles, jokes, songs, and games.

* **At home:** Keep reading aloud even after children learn to read independently, and discuss "big words" during everyday routines like dinner table conversation.