Stolen from Nature
An original article on biomimicry — bullet trains with kingfisher noses, Velcro's burr, a termite-cooled building — where the real object of study is the text's connective machinery. Students analyze HOW the article links a bird, a weed, and an insect colony: the analogy, the category it builds, and the distinction that keeps the category honest.
Common Core standards covered
- RI.8.3Analyze how a text makes connections among and distinctions between individuals, ideas, or events (e.g., through comparisons, analogies, or categories).
- RI.8.10By the end of the year, read and comprehend literary nonfiction at the high end of the grades 6–8 text complexity band independently and proficiently.
© Copyright 2010. National Governors Association Center for Best Practices and Council of Chief State School Officers. All rights reserved.
Teacher-facing overview
Big idea: Analyze how a text makes connections among and distinctions between individuals, ideas, and events, through comparisons, analogies, and categories.
Student target: “I can identify the moves a text uses to connect individuals, ideas, and events — comparison, analogy, category — and analyze how each move builds the argument, including the distinctions that keep a category honest.”
Success criteria: I can name a connective move by kind and cite its ¶. · I can explain what an analogy requires to hold — matched relationships, not matched things. · I can trace how the text builds a category and then patrols its boundary. · I can argue what the article would lose if a specific connection or distinction were cut.
Essential question
A bird, a weed, and an insect colony share no biology — yet one article makes them family. What machinery does a text use to CONNECT things, and why does a good category need a fence?
Learning target: I can identify the moves a text uses to connect individuals, ideas, and events — comparison, analogy, category — and analyze how each move builds the argument, including the distinctions that keep a category honest.
Success criteria
- I can name a connective move by kind and cite its ¶.
- I can explain what an analogy requires to hold — matched relationships, not matched things.
- I can trace how the text builds a category and then patrols its boundary.
- I can argue what the article would lose if a specific connection or distinction were cut.
Why this matters
RI.8.3 names its own machinery — comparisons, analogies, categories — and most students can FOLLOW all three while never noticing them working. This article makes the machinery the visible subject: an analogy whose terms are stated (thin-to-dense), a category built and defined in-text, members added from unrelated domains, and a boundary patrolled with a counterfeit test. Analyzing HOW a text connects — and what each connection licenses next — is the difference between reading an article and reading its architecture. Tagged RI.8.10: full-length informational text at the top of the grade band.
Students should already be able to
- Simile and metaphor (for contrast with analogy).
- Citing by paragraph number.
- Category and example, informally.
Where this shows up outside the classroom
Assessment plan
Formative — for feedback during the lesson
- Warm-up — are categories being framed as authored tools?
- Second-read marks — wiring, not bulbs, before the ledger opens.
- Ledger circulation — check the license column for downstream ¶ references.
Summative — the graded evidence: Exit ticket (move + license + fence sentence) plus the completed ledger; the authored fence and fourth member rank as extension evidence.
The passage: “Stolen from Nature”
An original informational article written for this lesson (≈680 words). Reproduce freely for your classroom.
¶1 In 1990, engineer Eiji Nakatsu had a problem that made noise — literally. Japan's bullet trains were the fastest in the world, but every time one exited a tunnel at 170 miles per hour, it pushed a wall of compressed air ahead of it that burst out with a boom loud enough to rattle windows half a kilometer away. Residents complained. Regulators set noise limits. The engineers were stuck — until Nakatsu, an amateur birdwatcher, remembered a bird that solves the same problem sixty times a day.
¶2 The kingfisher hunts by diving from air into water — from a thin medium into a dense one, which is precisely what a train does when it plunges from open track into the packed air of a tunnel. The bird enters the water almost without a splash. The secret is its beak: long, narrow, and wedge-shaped, it parts the water gradually instead of slamming into it. Nakatsu's team redesigned the train's nose as a fifty-foot steel kingfisher beak. The booms stopped. The redesigned train was also ten percent faster and used fifteen percent less electricity — the bird, it turned out, had been optimizing for millions of years.
🔒 The full text — 8 numbered paragraphs, plus the photocopy-ready handout — ships in the kit. See plans →
The task students work on
The class hunts the article's connective moves and builds the machinery ledger: the move, its kind (comparison, analogy, category, or distinction), and — the analysis column — what the move LETS THE TEXT DO NEXT. Then the boundary argument: what happens to ¶5's grand claim if ¶6's fence comes down? Cite by ¶ throughout.
The machinery ledger — move, kind, and what it licenses. Cite by ¶.
| The move (with ¶) | Kind | What it connects or separates | What it lets the text do next |
|---|---|---|---|
| Bird-dive : train-tunnel (¶2) | |||
| Inspired vs. mimicking (¶3) | |||
| Burr and termite mound join the story (¶4) | |||
| 'The connection is a shared pattern' (¶5) | |||
| Cereal and car thrown out (¶6) |
Anticipated student strategies
Move hunting first to build the inventory. Bridge testing second — it converts identification into analysis. Demolition last, where the class proves the fence is structural, not decorative.
- Move hunting. The student sweeps for connective language — 'which is precisely what,' 'a whole category,' 'not every' — and tags each find by kind.
The intended entry: the article signals its moves in its own phrasing. Share first.
🔒 2 more anticipated strategies with select-and-sequence guidance are in the full lesson. See plans →
Lesson script
Draw out: categories are tools built for purposes — the botanist sorts by seed, the cook by flavor. Sorting something into a category changes what you do with it (nobody puts tomatoes in fruit salad). Name the lesson: today's article BUILDS a category in front of you, recruits members, and then throws two impostors out — and our job is to watch the machinery, not just the examples.
Listen for: It holds everything and means nothing — a box with no walls. Keep this; it's the ¶6 argument in miniature.
The full article is in the workbook and the handout. Most students mark ¶2's 'which is precisely what a train does,' ¶3's inspired/mimicking line, ¶4's arrivals, ¶5's 'the connection is a shared PATTERN,' ¶6's expulsions. Introduce the four kinds on the board: comparison (alike/unlike), analogy (shared relationship between unlike things), category (membership under a principle), distinction (a boundary with a test). The article uses all four, in a deliberate order.
- An analogy matches RELATIONSHIPS, not objects.
- A distinction is a connection's bodyguard.
Listen for: The relationship: moving from a thin medium into a dense one. Analogy anatomy — the objects differ, the relationship matches, and the text SAYS SO explicitly.
🔒 The remaining 4 steps — fully scripted with teacher-says lines, discourse questions, look-fors, and interventions — are in the full lesson. See plans →
Misconceptions and how to respond
- “The article is about cool nature facts.” The facts are the freight; the article is about the wiring that carries them — one analogy, one category, two distinctions. Swap in different examples and the architecture would stand. That architecture is what RI.8.3 grades.
- “An analogy is a fancy comparison.” — the teacher response is in the full lesson.
- “The counterfeit paragraph (¶6) is a joke break.” — the teacher response is in the full lesson.
- “Categories are found, not made.” — the teacher response is in the full lesson.
🔒 Every misconception ships with a tested classroom response. See plans →
Scaffolded practice
The workbook follows gradual release rather than a page of blank prompts: 2 fully worked, 2 partially completed, then 4 independent.
- I doLiteral first — the anatomy of the analogy. In ¶2, name the two unlike objects, the shared relationship, and the payoff the analogy licensed.
🔒 7 more prompts across all three release tiers are in the full lesson. See plans →
Worked solutions and scaffolds for every prompt are in the downloadable kit, included with membership. See plans and pricing.
Exit ticket
- Name one connective move with its kind and ¶.
🔒 2 more exit-ticket questions are in the full lesson. See plans →
Worked answers, the completed answer tables, and the scoring rubric are in the downloadable kit, included with membership. See plans and pricing.
Printable handouts in the kit
All handouts are in Printable_Handouts.pdf inside the kit download.
Materials and classroom resources
Student experience
Students enter through a low-floor prompt, build or sketch a model, test a strategy, revise their thinking, collaborate, and present a final solution. The task remains accessible while allowing for sophisticated reasoning.
Detailed facilitation notes
- Step 1: First read: the article straight through, no marking. Ask: “What do you notice?”, “What could you try next?”, and “How can you prove that?”
- Step 2: Second read: mark every place the text CONNECTS two things — or fences them apart. Ask: “What do you notice?”, “What could you try next?”, and “How can you prove that?”
- Step 3: Name each move: comparison, analogy, or category — with its ¶. Ask: “What do you notice?”, “What could you try next?”, and “How can you prove that?”
- Step 4: Analyze the fence: why does ¶6's distinction protect the whole article? Ask: “What do you notice?”, “What could you try next?”, and “How can you prove that?”
Differentiation and inclusion
Support: The three-move vocabulary (compare / analogize / categorize) gives every reader a concrete hunt; extend with the counterfeit-test design task and the bonus-discovery argument in ¶7.
Language support: “I started by…”, “My model shows…”, and “I know my answer is reasonable because…”.
Extension: Require a second solution, alter a condition, or have students write a challenge for another group.
Accessibility: Manipulatives, enlarged visuals, oral response choices, partner reading, and reduced-copy student pages.
Assessment plan
Formative checks: Strategy choice, accuracy, representation, collaboration, and explanation.
End evidence: One connective move identified by kind and ¶, plus a two-sentence analysis of what the move lets the text do next.
Mastery: The student completes the task accurately and explains the strategy with limited prompting.