Skill: write-like-james @ cca3af6 · the build: write-lesson, write-mcqs, write-video-script, write-intro, write-summary @ cca3af6; the non-author review: review-lesson (Role B, the fix pass, and the adjudication of two blind reads — every key agreed), review-questions, review-figures, review-accuracy, review-physics @ cca3af6

Topic 1 "Why everything falls toward Earth's center" — your read (8 October 2026)

Skim first

The lessons in teaching order, each with its one rule sentence; then the intro script; then the question types. The review page follows.

The lessons and their rules

Lesson	Atom	Rule sentence
L01 Earth pulls on everything, all the time	FOR5-001	Earth pulls on every object all the time. Falling, resting or flying. A resting object stays still because something holds it up.
L02 Down means toward Earth's center	FOR5-002	Earth pulls every object toward Earth's center. Down means toward Earth's center. Wherever you stand.
L03 Evidence that Earth's pull points toward the ground	FOR5-003	Something you can see that shows an idea is true: evidence. It falls straight toward the ground, and nothing pushes it. So Earth's pull points toward the ground.

The intro script (117 words, about 58 s)

Here's Miss Abara's class. A globe stands on her desk, and Amara spins it with one finger. Amara stops the globe with her finger on Australia, near the bottom. Miss Abara says children there are in school right now. Amara lets go of her pencil, and the pencil falls to the floor. But on the globe, the ground in Australia faces away from the classroom floor. So which way does a dropped pencil fall in Australia, and what pulls it there? To find out, we will look at what pulls everything toward the ground, which way down really points, and how to show it. Okay, so are you ready to find out which way down really is?

The question types (from `TYPES_G5T01.md`)

Type 1 (easy · MCQ, the puller set · 001): which of these pulls the resting or flying thing toward the ground — Earth / the air / the Sun / nothing
Type 2 (easy · MCQ, the when set (ordered) · 001): at which time Earth is pulling on the thing — only while it falls / only while it rests / only while it moves / all the time
Type 3 (easy · MCQ · 001): what holds the resting or flying thing up — four things of the scene (the counter / the air / the lid / nothing …)
Type 4 (easy · MCQ, the name set · 001): what Earth's pull on the thing is called — its weight / its push / its speed / its size
Type 5 (medium · MCQ · 001): what happens when the holder goes; which sentence about the pull on a resting thing is true — four events / four sentences
Type 6 (easy · MCQ, the direction set · 002): which way a dropped thing falls at a named place — toward the ground under his / her feet / toward the North Pole / toward the bottom of a map / off into space
Type 7 (medium · MCQ, drawn globe · 002): which way the drawn ball moves when dropped; which sentence is true of two drawn balls — the four edges-or-center directions / four sentences
Type 8 (easy, medium · MCQ · 002): Earth's shape; the one point every dropped ball falls toward; where down means toward the center; what two balls on opposite sides share; what a curved horizon shows; how two paths compare; which way the top of a standing man's head points; toward which point Earth pulls a rolling rock — four single answers
Type 9 (easy, medium · MCQ · 003): which of four happenings is evidence that Earth's pull points toward the ground — four happenings, one with nothing pushing
Type 10 (easy · MCQ · 003): what we call something you can see that shows an idea is true — evidence / a guess / a story / a rule
Type 11 (medium · typed · 001): the name of the thing that pulls the bench toward the ground — Earth (article and misspelt forms)
Type 12 (medium · MCQ, the evidence-sentence frame · 003): which sentence uses the observation as evidence; what a hanging line shows — four sentences in one frame, or four directions
Type 13 (medium · MCQ · 003): the correct reason a windy path is poor evidence; what must be true of a falling thing for good evidence — four single statements
Type 14 (hard · MCQ, claim judged by reason · 001, 003): a named child (or a student) is wrong: what is the correct reason — four single-statement reasons
Type 15 (hard · typed · 001): the name for Earth's pull on the resting or flying thing — weight (article and child spellings)
Type 16 (hard · typed · 002): the one word that names the point every dropped thing falls toward — center (centre, middle, article forms)
Type 17 (hard · typed · 003): the word for something you can see that shows an idea is true — evidence (article and child spellings)
Type 18 (hard · MCQ, two ideas chained · 003): which of two tests is better evidence; what all the world's straight falls show together — four single answers

Three lessons for three atoms, in Miss Abara's class with Amara, Avery and Beatriz, and the Physics opening video in front of them.

Amara watches a bag fall off a cart at an airport window while one plane sits parked and another flies past, so L01 teaches that Earth pulls on every object all the time — falling, resting or flying — and that a resting thing stays still because something holds it up; Earth's pull on a thing is its weight (Grade 3's word, said once).

Avery and her cousin in Australia drop a ball each on a video call, so L02 draws the whole Earth and shows both balls falling toward the same point: down means toward Earth's center, wherever you stand, and nobody hangs upside down.

Miss Abara writes "Earth's pull points toward the ground" on the board and asks how the class can show it, so L03 coins evidence (something you can see that shows an idea is true), runs the pencil, the raindrops and the key on its string, then the same key blown sideways, and ends with the sentence frame: it fell straight toward the ground, nothing pushed it, so Earth's pull points toward the ground.

"Gravity" is never the force's name; nothing says or hints that the pull needs air; mass against weight is not taught.

The non-author review found one thing that had to change (the opening video was 119 words against your 90-word cap, and its falling bag was on a windy evening) and fifteen worth fixing, all fixed. Two cold readers then agreed every key; their one must-fix (a drawn ball at the bottom of the Earth, where "toward the center" and "toward the top edge" are one direction on the page) and their smaller flags are applied, with a re-read of the thirteen changed items still owed; every gate is back at its stated result. Pictures are the three cartoon placeholders until the text is through review.

Questions for James

Everything to rule on is on the Needs James page → the lessons, the open questions and the question types, each a card with buttons

Also on the site

Physics opening video, topic intro and poll · summary and three questions · mixed practice · the PP100 bank · the type sheet

After you answer

Nothing changes if you keep "shows". "Helps show" is one word in the lexicon line, the L03 article and script, the summary, two quiz items, two practice items and four bank items, plus their feedback — then a re-read of those items. Either way the re-read of the thirteen changed items runs now on blind/2026-10-08-adjudicated/ (ids in its CHANGED_IDS.md), the picture pass starts on the three placeholders once the keys agree, and your notes on the three scripts send the five-video batch (physics waits for your review).

What the review found, and what changed

The non-author review (8 October): one must-fix, fifteen worth fixing, six left as simplifications

The physics is right in every lesson line, item and figure: Earth is the actor, the pull is named weight, gravity is never the force's name, no line plants "gravity needs air", the two documented beliefs are met in the cases and tested with their sources cited, the force arrows start at the object's centre and the globe arrows all point at the centre dot, and the headache globe is the teaching globe with the arrows off. Grade 3's recalled sentences are reproduced word for word. The ten Grade 4 faults are absent.

Fixed: the Physics opening video cut from 119 to 88 words on a still scene (its popcorn bag had been falling "on a windy evening"); the evidence criterion "with nothing else pushing or pulling it" — false of the hanging key, whose string pulls it — now the rule's own "with nothing pushing it" in the article line and ten whys, and the bank key that carried it; the pencil now tips over the desk's edge instead of rolling off it with "nothing pushed it"; a caption and a feedback line no longer say a ball "falls up into the Earth"; the evidence table's header reads "which way it fell or hung" (the still key never moved); the ARM'S PUSH chip no longer straddles the panel border and the HANGS STRAIGHT DOWN chip no longer touches the key; a verbless term stem and two "So we call it evidence" whys (a "So" before a told name) rewritten; the practice's feather (the catalogue's own air-pushed faller) is a button and its stem asks plainly; a drone's "spinning blades push it up" now has the air pushing on the blades; a canoe item lost its second water distractor; "under your feet" became "under the dropper's feet"; "In this course" left a feedback line; the intro's "the floor in Australia faces the other way" says "the ground in Australia faces away from the classroom floor".

Left: "shows" against "helps show" (Question 1); "Australia is on the other side of the Earth from Texas" (the exact opposite point is the Indian Ocean; fine at this level); "nothing pushing it" of a falling pencil or raindrop (the air pushes a little; the claim is about direction); the bee held up by "its beating wings" (the why names the air); the one feedback line that says what mass is, to correct a typed "mass"; the Virginia lamp chain in the bank beside the Denver lamp chain in L01's quiz (a different move). Full table: REVIEW_G5T01_2026-10-08.md.

The bank, in brief

52 items in content/G5T01_pp100_bank.py: 42 four-option MCQs and 10 typed words (Earth once; weight twice; center four times; evidence three times). Per atom: FOR5-001 18 · FOR5-002 17 · FOR5-003 17. Easy 20, medium 18, hard 14, sorted easy to hard and rising with the atom's place. MCQ keys A 7 · B 12 · C 12 · D 11. Eighteen question types, one exemplar each on the type sheet. Every bank claim is "X is wrong. What is the correct reason?" with four single-statement reasons; James's four-option verdict-and-reason form is not used. Every scene is fresh against the lessons, quizzes and practice (the scene-noun grep is in the build record).

Gates after the fixes

check_topic.py 0 FAIL, 26 WARN (S46 B = C = D = 0; S30 12 typed, 0 fail) · check_terms.py hits {} · check_g5_articles.py 0 FAIL (L03 349 words, answered) · check_key_tells.py 0 of 92 · check_svg_ids.py PASS · check_lessons.py 0 FAIL, S118 silent · blind bundle re-cut at blind/2026-10-08-adjudicated/ (88 mcq, 12 text, 1 frq, 101 held; two readers agreed every key on the previous cut) · batch 5 videos, check_brief.py all ✓, key string B A B B A A, "strand" 0. Not sent, not committed.