Skill: course-build → write-mcqs → write-explanation, design-check-sequence @ dea5d9e

Topic 36 — Eggs, body parts and senses — the PP100's nine question types, with their exemplars

What this page is. James approves a bank's question TYPES before the bank is generated (vault: A bank is reviewed as its question types first, one exemplar each, 28 Sep 2026). This sheet writes the exemplars in full, exactly as they sit in content/G3T36.py (PP100, flagged TYPE_SHEET_ONLY). Nine types for three atoms, ten exemplars (type 1 has two forms), under the ceiling of ten. No other bank item exists yet. Once the types stand, about fifty items are generated from them, varying the animal, the part, the scene and the names, easy-heavy.

Revised 29 Sep 2026 after the non-author review (REVIEW_G3T36_2026-09-29.md): three exemplars were quiz or practice items with a noun changed and are re-instanced (B02 the shark → a vulture, then a pig after cold read A; B03 the anteater's tongue → an octopus's arms; B04 the deer's ears → a walrus's whiskers); one carried two lesson animals (B05 the hen and the hawk → a quail and a crow); type 1 is split into the form that tests LIF3-013 alone (the group named) and the form that pairs it with Topic 35's sort (the group not named) (F08); "smell" left the typed accept list — it is not a body part (F04); a ninth type on the no-sensing boundary is written for James's call (S13); the bar list below covers every group (F08, the seam ruling).

James's rulings applied. Hard items are typed, never MCQs (28 Sep night): two text-entry types (the body part the pig sensed with; the word egg-layer). Easy and medium are four-option MCQs. Every attached question stands alone; no stem leans on a video; no option bundles a verdict with a reason; every stem is a positive question; when the stem asks what an animal does, every option is an event (type 9); every exemplar is a fresh instance — no lesson, quiz or practice animal or scene reappears (the design-move inventory at the foot is the check); a headache character (Fiorella, Griffin, Clemency) appears in no item; each claim-maker is used once in the topic and none in the bank. Nothing James has rejected appears here.

How to read a type line. Each says what the stem asks, what the four options are (the kind of thing), and gives its exemplar scene. Every MCQ has a why (no per-option feedback in the bank; the engine prints Correct / Not quite). Tags follow depth of reasoning: easy = one step (the egg-layer among four animals whose groups are given; a part and what it does → its job; a described event → what was sensed; nothing sensed → what the animal does); medium = two ideas at once (place the animal in its group, then apply the rule; live young → the group; a named action → which of four parts does it; a sensing part → its survival job); hard = the word or the body part is PRODUCED, not recognised, from a description that never prints it.

The nine types

Hard because (type 7): the part is never named — the student reasons from "buried, nothing can be seen" to smelling, then produces the word. Hard because (type 8): the coined term is produced, not recognised, from a description that never prints it. Medium because (type 1b): the student places each animal in its group (Topic 35) before applying the rule. Medium because (type 4): two ideas chain — born alive means live young, and live young means a mammal. Medium because (type 5): the action is named and the part must be picked from four parts of one animal. Medium because (type 6): a sensing part's job is read as a survival job — two atoms in one item. Type 9 is the atom's boundary case in bank form — James's call whether the bank carries it or the lessons' two items (the skunk; Maxine's deer) are enough. Every no-sensing stem rules out sound, light AND smell (cold read A).

Bank notes for the generator. Type 1a: the four bracketed groups are always four DIFFERENT groups, so the labels never single out the key (cold read A: three mammals and one reptile made the reptile the odd label). Type 1a/1b: keep every animal one an eight-year-old knows; never two items on the same four animals; vary the class asked. Barred as egg-layers (some of these bear live young — Topic 35's seam ruling widened): reptiles — never a rattlesnake, garter snake, boa, adder, slow-worm, common lizard or skink (a python, a cobra, an anole, a bearded dragon, a tortoise or a crocodile where a reptile is wanted); fish — never a guppy, molly, platy, swordtail, shark, ray or seahorse; amphibians — never a fire or alpine salamander; insects — never an aphid; mammals — never a platypus or echidna as a live-bearer. Type 2 and 6: the stem always says what the part DOES (the reading); the job is the sort; the option set prints the rule's own words ("keeping warm or cool"). Type 3: the four options are four ways of sensing ONE source (its sound, its shadow, its smell, its touch), so exactly one fits the described event. Type 9: every option is an event the animal could do; the stem states that nothing reaches it. Type 4: never add "and drinks milk" — that hands Topic 35's answer over. Type 5: four parts of one animal, all real. Type 7: the accept list stays on ONE body part, never a sense-word; "tongue" items (a snake) are fine, "skin" items only where the event is a touch; never a bird (its nostrils sit on the beak, so "beak" becomes a defensible type-in — cold read A) and never a vulture (most hunt by sight). Type 8: the description never prints "egg-layer" or "lays eggs".

Coverage (every atom alone, and the pairs)

At most two alone-types per atom, three for LIF3-027 only if James keeps type 9. Order in the file: easy PP-1…PP-4 → medium PP-5…PP-8 → hard PP-9, PP-10. Keys of the eight MCQs, in file order: PP-1 B · PP-2 A · PP-3 C · PP-4 D · PP-5 B · PP-6 D · PP-7 C · PP-8 A (two of each letter). Typed items: 2 of 10 on the sheet; in a bank of about fifty, types 7 and 8 supply about 12 typed items on fresh events and fresh descriptions.

Design-move inventory (every move on the page, then the bank's)

No bank exemplar shares an animal or a scene with a lesson, quiz or practice item, and no two exemplars share a move (1a and 1b share a move by design — the two forms of one type).

The exemplars, in full

Type 1a — PP-1 · LIF3-013 · easy

Stem: Which of these four animals gives birth to live young?

• an iguana (a reptile)
• a zebra (a mammal) ← key
• a pigeon (a bird)
• a tuna (a fish)

Why: An iguana is a reptile, a pigeon is a bird and a tuna is a fish: all three lay eggs. / A zebra is a mammal. / Mammals give birth to live young. / So the zebra is the one.

Type 2 — PP-2 · LIF3-020 · easy

Stem: An octopus wraps its long arms around a closed shell and pulls the two halves apart to reach the animal inside. Which job do the arms do?

• getting food ← key
• staying safe
• keeping warm or cool
• moving about where it lives

Why: The octopus eats the animal inside the shell. / Its long arms pull the shell open. / So the arms' job is getting food.

Type 3 — PP-3 · LIF3-027 · easy

Stem: A crow caws loudly from a tree, and a quail runs under a bush with her chicks. What did the quail sense?

• the crow's shadow
• the crow's smell
• the crow's caw ← key
• the crow's claws

Why: The crow cawed, and a caw is a sound. / The sound traveled through the air to the quail's ears. / So the quail sensed the crow's caw, then she responded.

Type 9 — PP-4 · LIF3-027 · easy (James's call whether the type stays)

Stem: A llama grazes in a field, and far over the hill a tractor starts up, too far away to be heard, seen or smelled. What does the llama do?

• it gallops away
• it lifts its head
• it trots to the gate
• it keeps grazing ← key

Why: The tractor is too far away: no sound, no light and no smell from it reach the llama. / The llama senses nothing. / No sensing, no response: it keeps grazing.

Type 1b — PP-5 · LIF3-013 + LIF3-012 · medium

Stem: Which of these four animals gives birth to live young?

• a python
• a hamster ← key
• a swan
• a clownfish

Why: A python is a reptile, a swan is a bird and a clownfish is a fish: all three lay eggs. / A hamster is a mammal. / Mammals give birth to live young. / So the hamster is the one.

Type 4 — PP-6 · LIF3-013 + LIF3-012 · medium

Stem: A baby animal is born alive, not in an egg. Which group is it in?

• a bird
• a reptile
• a fish
• a mammal ← key

Why: Birds, reptiles and fish lay eggs, so their babies hatch out. / Mammals give birth to live young. / A baby born alive is live young. / So the animal is a mammal.

Type 5 — PP-7 · LIF3-020 · medium

Stem: A mole lives underground and digs long tunnels. Which part helps the mole dig?

• its tiny eyes
• its soft fur
• its wide front paws ← key
• its short tail

Why: Digging needs something that pushes the soil aside. / The mole's wide front paws do that. / So the paws help the mole dig its tunnels.

Type 6 — PP-8 · LIF3-020 + LIF3-027 · medium

Stem: A walrus's stiff whiskers feel for clams on the dark sea floor, where it cannot see them. Which job do the whiskers do?

• getting food ← key
• staying safe
• keeping warm or cool
• moving about where it lives

Why: The sea floor is dark, so the walrus cannot see the clams. / Its stiff whiskers feel for them. / The clams are its food, so the whiskers' job is getting food.

Type 7 — PP-9 · LIF3-027 · hard · text entry

Stem: A pig digs straight down to a mushroom buried under the soil, where nothing can be seen. Type the name of the body part the pig sensed the mushroom with.

Accept: nose · its nose · the nose · nostrils · its nostrils · snout · its snout · the snout (the grader folds case)

Why: The mushroom is buried under the soil, so no light from it reaches the pig's eyes. / The pig smells it through the soil. / An animal smells with its nose. / So the pig sensed the mushroom with its nose.

Hard because: the part is never named; the student reasons from "buried, nothing can be seen" to smelling and produces the word.

Type 8 — PP-10 · LIF3-013 · hard · text entry

Stem: Baby lizards, baby fish and baby birds all hatch out of eggs. Type the word for an animal whose babies hatch out.

Accept: EGGLAYER_ACC — egg-layer · an egg-layer · egg layer · an egg layer · egglayer · an egglayer · egg-layers · egg layers · egg-laying animal (and its forms)

Why: Babies that hatch out came from eggs. / An animal that lays eggs is called an egg-layer. / Lizards, fish and birds are egg-layers.

Hard because: the term is produced, not recognised, from a description that never prints it.