Building and making things safely

Tests: 12 of 18 right · Exam: 1 of 4 right · Kind: ★★ · Understood: 20 of 22 · Run: 2026-10-18, commit f3c23ea72

Lesson 244 of the everyday course of Mova's primary school, as Mova's small model took its tests: it had read this lesson and the ones before it and learned from their exercises. Each test shows the options in the order the student saw them, its choice, the right answer, the score of every option and why it chose. The lesson itself, sentence by sentence with trees and pragmatics: the lesson in the corpora.

Every question of this lesson and each of its options parsed by Mova, with trees and pragmatics: the lesson's questions in the corpora.

Test 1 · ★★ · right ✓

A boy in Florida digs a hole on the beach until he can stand in it up to his chest. Why is it dangerous?

1. The hole will fill up with fresh water from under the sand — no support
2. The sand at the bottom will get much too hot to stand on — score 5
3. He might find a crab at the bottom — score 6
4. The sand walls can collapse and bury him — ← Mova's choice · ✓ the right answer · score 7

Why: It took the question to ask why something happens (its cause). It chose option 4 with score 7, against 6 for the next best. Its support: lesson 244, line 18: «Do not dig holes in sand deeper than your knees or tunnel into the sand, because they can collapse and bury a child.», reached through the cause of the sentence the question matched. What matched: the same action «collapse» (+6); a different doer (counts against) (+1). · the question and its options parsed, with trees and pragmatics

Test 2 · ★★ · wrong ✗

In a snowy town in Minnesota, why must children not build forts in the snow piled by the road?

1. The forts melt faster near roads — ← Mova's choice · score 6
2. The snow can collapse, and ploughs cannot see them — ✓ the right answer · score 6
3. The snow by roads is far too dirty and salty to build with — no support
4. Cars need that snow to help them slow down at the corners — no support

Why: It took the question to ask why something happens (its cause). It chose option 1 with score 6, tied with another option at 6 (the first shown, or the one claiming less beyond what it knows, wins). Its support: lesson 41, line 6: «A boy in Ohio ran into the road after his ball without stopping; a car could not stop in time and hit him, and he spent weeks in hospital with a broken leg.», reached through the option's own match among the sentences about the question's things. What matched: the same action «run» (+4); the same place «road» (+3). Against it: a different doer (counts against) (-1). The right option, 2, scored 6. · the question and its options parsed, with trees and pragmatics

Test 3 · ★★ · right ✓

Your den is held up by a tall bookcase you tugged over. What is the danger?

1. Blankets are much too heavy for bookcases to hold up — no support
2. The books might get creased and bent — no support
3. The bookcase will get dusty — no support
4. Heavy furniture can tip over and hurt someone — ← Mova's choice · ✓ the right answer · score 9

Why: It took the question to ask what it is done to. It chose option 4 with score 9, the only option with support. Its support: lesson 244, line 10: «Make blanket dens with light things that will not fall, and tidy up after, because heavy furniture can tip over.», reached through the same lesson line as the sentence the question matched. What matched: the same action «tip over» (+4); the same doer «heavy furniture» (+3); the same property (+2). · the question and its options parsed, with trees and pragmatics

Test 4 · ★★ · right ✓

A girl touches the hot glue she has just squeezed out. What will probably happen?

1. The glue will feel cool and wet — no support
2. She will burn her finger — ← Mova's choice · ✓ the right answer · score 1
3. Nothing, glue is never hot — no support
4. Her finger will stick forever — no support

Why: It took the question to ask which statement is true. It chose option 2 with score 1, the only option with support. Its support: lesson 237, line 7: «A girl in England picked foxglove flowers and licked her fingers; she felt sick and dizzy and needed hospital treatment.», reached through the option's own match among the sentences about the question's things. What matched: the same thing acted on «fingers» (+2). Against it: a different action (counts against) (-1). · the question and its options parsed, with trees and pragmatics

Test 5 · ★★ · right ✓

Why do engineers change only one thing at a time when testing?

1. Because one change always fixes it — score 5
2. So the test takes longer — no support
3. Because changing more than one thing is against the rules — score 6
4. So they can tell which change made the difference — ← Mova's choice · ✓ the right answer · score 8

Why: It took the question to ask why something happens (its cause). It chose option 4 with score 8, against 6 for the next best. Its support: lesson 244, line 21: «When a project does not work first time, change one thing, test and try again; changing only one thing at a time shows which change made the difference, and en…», reached through the same lesson line as the sentence the question matched. What matched: the same doer «change» (+3); the same thing acted on «difference» (+3); the same action «make» (+2). · the question and its options parsed, with trees and pragmatics

Test 6 · ★★ · wrong ✗

A boy builds a model in a closed bedroom and gets a headache from the paint smell. What should he have done?

1. Closed the window to keep warm — ← Mova's choice · score 11
2. Worked where fresh air could flow, following the label — ✓ the right answer · score 5
3. Held his breath the whole time he was painting — score 9
4. Used more paint so that he could finish quicker — score 3

Why: It took the question to ask what is done. It chose option 1 with score 11, against 9 for the next best. Its support: lesson 62, line 5: «A boy in Wellington hears thunder and finds his dog shaking under the bed. He does not drag it out; he stays calm nearby, shuts the doors and windows and lets…», reached through the option's own match among the sentences about the question's things. What matched: the same thing acted on «doors» (+6); it fills the role the question asks for (+3); the same action «shut» (+2). The right option, 2, scored 5. · the question and its options parsed, with trees and pragmatics

Test 7 · ★★ · wrong ✗

Which nail-hammering habit keeps fingers safest?

1. Hitting as hard as possible right from the very start — no support
2. Light taps first, then fingers away once it stands — ✓ the right answer · no support
3. Holding the nail with your whole hand around it — ← Mova's choice · score 9
4. Holding the nail at the very top — score 9

Why: It took the question to ask who or what does it. It chose option 3 with score 9, tied with another option at 9 (the first shown, or the one claiming less beyond what it knows, wins). Its support: lesson 244, line 12: «When hammering, hold the nail low, start with light taps and keep fingers away.», reached through the option's own match among the sentences about the question's things. What matched: the same thing acted on «nail» (+5); the same action «hold» (+4). The right option, 2, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics

Test 8 · ★★ · right ✓

Why should a splinter not be left in your skin for days?

1. It can get infected — ← Mova's choice · ✓ the right answer · score 5
2. It makes your hand smell — score 3
3. It will grow into a thorn — no support
4. It turns into wood under your skin — score 4

Why: It took the question to ask why something happens (its cause). It chose option 1 with score 5, against 4 for the next best. Its support: lesson 244, line 14: «Ask an adult to take out a splinter with clean tweezers, because a splinter left in can get infected.», reached through the option's own match among the sentences about the question's things. What matched: the same doer «splinter» (+2); the same light verb (be, have, do, get, go) (+2); the same property (+1). · the question and its options parsed, with trees and pragmatics

Test 9 · ★★ · right ✓

building the lego set, skipped step 12, it's prob fine

1. Use glue to make it stay together — no support
2. Keep going, you'll fix it all at the end — no support
3. Go back, follow it one step at a time and check — ← Mova's choice · ✓ the right answer · score 9
4. Throw away the instructions — no support

Why: It took the question to ask which statement is true. It chose option 3 with score 9, the only option with support. Its support: lesson 244, line 9: «Follow building instructions one step at a time and check before going on, because skipped steps lead to mistakes.», reached through the same lesson line as the sentence the question matched. What matched: the same action «follow» (+5); the same property (+4). · the question and its options parsed, with trees and pragmatics

Test 10 · ★★ · right ✓

got a splinter, gonna dig it out with a pin

1. Leave it in, it falls out by itself — score 3
2. Squeeze it hard with your dirty fingers till it pops — no support
3. Bite it out — no support
4. Ask an adult to take it out with clean tweezers — ← Mova's choice · ✓ the right answer · score 9

Why: It took the question to ask which statement is true. It chose option 4 with score 9, against 3 for the next best. Its support: lesson 212, line 17: «Most spiders and insects are harmless; you keep your distance and ask an adult to move one outside, and in Australia some spiders need an adult.», reached through the same lesson line as the sentence the question matched. What matched: the same action «ask» (+5); the same receiver «adult» (+4). · the question and its options parsed, with trees and pragmatics

Test 11 · ★★ · right ✓

making a den, can i use the big bookcase as a wall

1. Yes, heavy things make the strongest walls — no support
2. No, use light things that won't tip over — ← Mova's choice · ✓ the right answer · score 6
3. Yes, if you push it hard against the sofa — no support
4. Only if you climb on top to hold it still — no support

Why: It took the question to ask which statement is true. It chose option 2 with score 6, the only option with support. Its support: lesson 244, line 10: «Make blanket dens with light things that will not fall, and tidy up after, because heavy furniture can tip over.», reached through the same lesson line as the sentence the question matched. What matched: the same action «tip over» (+5); the same property (+4). Against it: one says «not», the other does not (counts against) (-3). · the question and its options parsed, with trees and pragmatics

Test 12 · ★★ · wrong ✗

robot car won't move, tried it once, it's broken forever

1. Hit it until it moves — ← Mova's choice · score 3
2. Change everything at once — no support
3. Give up, it will never work now — no support
4. Change one thing, test and try again — ✓ the right answer · no support

Why: It took the question to ask which statement is true. It chose option 1 with score 3, the only option with support. Its support: lesson 42, line 12: «Even with the walk signal you look both ways, because a car may still be moving or turning.», reached through the remembered sentence the question matched. What matched: the same doer «car» (+2); the same action «move» (+1). The right option, 4, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics

Test 13 · ★★ · wrong ✗

dad's drill is in the shed, can i use it while he's out

1. Yes, if you go slowly — ← Mova's choice · no support
2. Yes, if you hold it with both hands — no support
3. No, only with an adult right there — ✓ the right answer · no support
4. Only for small holes — no support

Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics

Test 14 · ★★ · right ✓

Why did Ruby's den roof give way under her?

1. It was not strong enough for her weight — ← Mova's choice · ✓ the right answer · no support
2. Den roofs always break in the rain — no support
3. She built it too pretty — no support
4. It was made from the wrong colour of wood — no support

Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics

Test 15 · ★★ · right ✓

hammered my thumb n it's bleeding loads

1. Wash it in the paint water — no support
2. Hide it so you don't get told off — no support
3. Keep hammering, it'll stop on its own — no support
4. Press a clean cloth on it and get an adult — ← Mova's choice · ✓ the right answer · score 11

Why: It took the question to ask which statement is true. It chose option 4 with score 11, the only option with support. Its support: lesson 83, line 4: «A boy in Galway scrapes his knee on the path; he rinses it with clean water, presses a clean cloth on it until it stops bleeding, and puts on a plaster.», reached through the same lesson line as the sentence the question matched. What matched: the same action «press» (+5); the same thing acted on «clean cloth» (+4); the same place «cloth» (+2). · the question and its options parsed, with trees and pragmatics

Test 16 · ★★ · right ✓

did u hear a kid built a den with a big bookcase and it tipped over on him? real lesson?

1. Use heavy furniture so the den is nice and strong — no support
2. Only build dens in the garden — score 3
3. Bookcases never tip over — score -5
4. Build dens with light things that won't fall — ← Mova's choice · ✓ the right answer · score 8

Why: It took the question to ask which statement is true. It chose option 4 with score 8, against 3 for the next best. Its support: lesson 244, line 10: «Make blanket dens with light things that will not fall, and tidy up after, because heavy furniture can tip over.», reached through the same lesson line as the sentence the question matched. What matched: the same action «fall» (+5); the same doer «light things» (+3). · the question and its options parsed, with trees and pragmatics

Test 17 · ★★ · right ✓

apparently some boys built a treehouse with no adult and the floor broke and one broke his leg. what's the true lesson?

1. Use more nails and it'll be fine — no support
2. Treehouses never break — no support
3. Build with an adult who checks the wood and height — ← Mova's choice · ✓ the right answer · score 2
4. Build it higher up in the tree so it's safer — no support

Why: It took the question to ask which statement is true. It chose option 3 with score 2, the only option with support. Its support: lesson 57, line 7: «A girl in Australia said no loudly when an older child touched her in a way she did not like, and told her mum straight away; the adults made sure it never hap…», reached through the remembered sentence the question matched. What matched: the same circumstance (+3); the same action «make» (+1). Against it: a different doer (counts against) (-2). · the question and its options parsed, with trees and pragmatics

Test 18 · ★★ · wrong ✗

my mate says his cousin lost a finger to a saw in like one second. probably blown up?

1. Saws can't cut fingers — ← Mova's choice · score 0
2. Maybe, but power tools really can do that; adults only — ✓ the right answer · no support
3. All made up, saws are slow — no support
4. Only electric toothbrushes are dangerous — no support

Why: It took the question to ask which statement is true. It chose option 1 with score 0, the only option with support. Its support: lesson 229, line 9: «Keep far away from a running lawnmower, because it can throw stones and its blades can cut off fingers and toes.», reached through the option's own match among the sentences about the question's things. What matched: the same thing acted on «fingers» (+2); the same action «cut off» (+1). Against it: a different doer (counts against) (-1); one says «not», the other does not (counts against) (-2). The right option, 2, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics

Exam question 1 · formal language · right ✓

Identify the appropriate response when a project does not succeed at the first attempt.

1. The project is abandoned at once — no support
2. Everything is changed simultaneously — no support
3. The instructions are discarded entirely — no support
4. One thing is altered, tested and tried again — ← Mova's choice · ✓ the right answer · score 9

Why: It took the question to ask which statement is true. It chose option 4 with score 9, the only option with support. Its support: lesson 244, line 21: «When a project does not work first time, change one thing, test and try again; changing only one thing at a time shows which change made the difference, and en…», reached through the same lesson line as the sentence the question matched. What matched: the same action «change» (+5); the same thing acted on «one thing» (+4). · the question and its options parsed, with trees and pragmatics

Exam question 2 · formal language · wrong ✗

Which of the following statements most accurately characterises a splinter left in the skin?

1. It dissolves harmlessly within a day — score 5
2. It must be cut out with a knife — no support
3. It is best left in the skin for a week or so — ← Mova's choice · score 11
4. It may become infected and is removed by an adult — ✓ the right answer · score 6

Why: It took the question to ask who or what does it. It chose option 3 with score 11, against 6 for the next best. Its support: lesson 85, line 6: «A girl in Georgia left a splinter deep in her palm for a week; the skin around it became infected, and a nurse had to take it out and clean it.», reached through the option's own match among the sentences about the question's things. What matched: the same thing acted on «splinter» (+5); the same action «leave» (+4); the same property (+2). The right option, 4, scored 6. · the question and its options parsed, with trees and pragmatics

Exam question 3 · formal language · wrong ✗

Select the response consistent with established practice regarding power tools.

1. Children may use them alone once shown how — ← Mova's choice · score 2
2. Children may use them alone provided that they wear gloves — score 2
3. Children may use them in the garden — score 2
4. Children use them only with an adult present — ✓ the right answer · score 2

Why: It took the question to ask which statement is true. It chose option 1 with score 2, tied with another option at 2 (the first shown, or the one claiming less beyond what it knows, wins). Its support: lesson 229, line 8: «Use garden tools only with a grown-up; lay a rake teeth down and carry shears closed and pointing down.», reached through the option's own match among the sentences about the question's things. What matched: the same thing acted on «garden tools» (+2); the same action «use» (+1). Against it: a different doer (counts against) (-1). The right option, 4, scored 2. · the question and its options parsed, with trees and pragmatics

Exam question 4 · formal language · wrong ✗

Ascertain the reason for which an adult checks a structure before anyone climbs upon it.

1. It needs to be painted first — ← Mova's choice · score 3
2. Climbing is forbidden without a ticket — no support
3. Adults must sign the structure — no support
4. It may not hold a person's weight — ✓ the right answer · score 3

Why: It took the question to ask which statement is true. It chose option 1 with score 3, tied with another option at 3 (the first shown, or the one claiming less beyond what it knows, wins). Its support: lesson 224, line 6: «A boy in a museum in London climbed onto a statue's base for a photo; he slipped, cracked his head on the marble floor and needed stitches.», reached through a sentence linked to the one the question matched. What matched: the same doer «boy» (+2); the same action «need» (+1). The right option, 4, scored 3. · the question and its options parsed, with trees and pragmatics

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