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BC and AD, dinosaurs and pyramids, and timelines

Tests: 5 of 12 right · Exam: 1 of 4 right · Kind: ★★★ · Understood: 6 of 16 · Run: 2026-10-18, commit f3c23ea72

Lesson 125 of the world 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 · ★★★ · wrong ✗

Zoe: "500 BC in one book and AD 500 in another, same year innit?"

  • 1. Yes, BC and AD are just two different names for one year — ← Mova's choice · no support
  • 2. No, they're only 500 years apart, because both say 500 — no support
  • 3. No, they're exactly 1,000 years apart, 500 and 500 — no support
  • 4. No, they're 999 years apart, either side of year 1 — ✓ the right answer · no support

Why: Nothing it remembers matched the question, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics

Test 2 · ★★★ · wrong ✗

Theo: "What happened in year 0, sir?" Teacher: "Trick question." Why?

  • 1. Nothing happened, so it was left out of books — ← Mova's choice · no support
  • 2. Year 0 was skipped in 1752 — no support
  • 3. There was no year 0; 1 BC is followed by AD 1 — ✓ the right answer · no support
  • 4. Year 0 lasted only one day — 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 3 · ★★★ · right ✓

Jack, from Glasgow: "Caesar got done in in 44 BC, so that's 1,982 year ago, aye?" ("Got done in" means was killed.) What's right?

  • 1. 44 years, since BC counts from now — score 4
  • 2. Yes, 2026 take away 44 is 1,982 — score 3
  • 3. 2,070 years: just add 44 and 2026 — no support
  • 4. 2,069 years: add 44 and 2026, then take away 1 — ← Mova's choice · ✓ the right answer · score 6

Why: It took the question to ask which statement is true. It chose option 4 with score 6, against 4 for the next best. Its support: lesson 125, line 2: «There is no year 0: 1 BC is followed straight by AD 1. So to find the gap from a BC year to an AD year, add the two numbers and take away 1. Julius Caesar was…», reached through the same lesson line as the sentence the question matched. What matched: the same action «take away» (+3); the same thing acted on «1» (+2); the same property (+1). · the question and its options parsed, with trees and pragmatics

Test 4 · ★★★ · right ✓

Mia: "The pyramids are like 2,000 years old, no?" Her sister: "Way older, babe." Who's right?

  • 1. The sister: about 4,500 years — ← Mova's choice · ✓ the right answer · no support
  • 2. Neither: about 45,000 years — no support
  • 3. Neither: about 450 years — no support
  • 4. Mia: about 2,000 years — no support

Why: Nothing it remembers matched the question, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics

Test 5 · ★★★ · right ✓

Liam: "Cavemen fought dinosaurs, it was in a cartoon, so it's real." His sister: "Nah, that's proper wrong." ("Proper" means very.) Who's right?

  • 1. Liam is: cavemen hunted T. rex for food — no support
  • 2. She is: dinosaurs died out about 66 million years before humans — ← Mova's choice · ✓ the right answer · score 2
  • 3. Liam is, but only small dinosaurs — no support
  • 4. She is, because dinosaurs never really existed and the bones are fake — no support

Why: It took the question to ask which statement is true. It chose option 2 with score 2, the only option with support. Its support: lesson 125, line 12: «Non-bird dinosaurs died out about 66 million years ago; humans appeared only about 300,000 years ago, so no human ever saw one.», reached through the option's own match among the sentences about the question's things. What matched: the same action «die out» (+1); the same property (+1). · the question and its options parsed, with trees and pragmatics

Test 6 · ★★★ · wrong ✗

Amir: "T. rex closer to us than to Stegosaurus? Skibidi nonsense!" (He means rubbish.) Check with numbers.

  • 1. They lived at the same time, so it is nonsense — score 5
  • 2. T. rex lived 150 million years ago, before Stegosaurus — ← Mova's choice · score 7
  • 3. Stegosaurus lived just 1,000 years before T. rex — score 6
  • 4. About 83 million years from Stegosaurus to T. rex, about 66 million from T. rex to us — ✓ the right answer · no support

Why: It took the question to ask which statement is true. It chose option 2 with score 7, against 6 for the next best. Its support: lesson 125, line 14: «Stegosaurus lived about 150 million years ago and T. rex about 68 to 66 million years ago, so T. rex lived closer in time to us than to Stegosaurus.», reached through a sentence linked to the one the question matched. What matched: the same action «live» (+4); the same property (+2); a different doer (counts against) (+1). The right option, 4, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics

Test 7 · ★★★ · wrong ✗

Ruby: "Egyptians and mammoths at the same time? Wild." ("Wild" means amazing.) Is it true?

  • 1. Yes, the Egyptians kept mammoths as pets — ← Mova's choice · no support
  • 2. No, mammoths only appeared on Earth after the Romans had built all their roads — no support
  • 3. Yes, the last mammoths lived on an Arctic island until about 4,000 years ago — ✓ the right answer · no support
  • 4. No, mammoths died out with the dinosaurs — 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 8 · ★★★ · wrong ✗

Ben squashes Earth's whole history into one day. About when do the dinosaurs die out on his clock?

  • 1. Exactly at noon — ← Mova's choice · no support
  • 2. Just after midnight at the very start — no support
  • 3. About 21 minutes before midnight — ✓ the right answer · no support
  • 4. At breakfast time — 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 9 · ★★★ · wrong ✗

Olena: "Kyiv was founded in 482, so it's over 1,500 years old?" What's careful and true?

  • 1. 2,508 years old — ← Mova's choice · no support
  • 2. Only 482 years old — no support
  • 3. Exactly 1,544 years, proven to the very day — no support
  • 4. 1,544 years by the traditional date, which comes from old stories — ✓ the right answer · 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 10 · ★★★ · right ✓

Mila draws 2,000 years on 1 metre. Her mate: "Your birth's gonna take up half the line, bruv." What's right?

  • 1. It's just half a centimetre from the end — ← Mova's choice · ✓ the right answer · no support
  • 2. Yes, half the line, so a whole 50 centimetres — no support
  • 3. It's 10 centimetres from the end of the line — no support
  • 4. It's right at the very start of the whole line — 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 11 · ★★★ · right ✓

Josh's mate: "Aliens built Stonehenge, 100%." Josh: "Nah, people with ropes and wood, ya muppet." What's the best reason Josh is right?

  • 1. Archaeologists found the builders' tools, homes and bones — ← Mova's choice · ✓ the right answer · score 8
  • 2. Stonehenge was only built last century, so no aliens were needed — score 7
  • 3. Aliens are too short to lift such big, heavy stones on their own — no support
  • 4. Stonehenge is made of wood, not stone, so it was easy for anyone — score 7

Why: It took the question to ask which statement is true. It chose option 1 with score 8, against 7 for the next best. Its support: lesson 125, line 5: «Some old dates are traditions rather than measurements, like Kyiv's founding in AD 482, and big claims, like aliens building Stonehenge, need evidence: archaeo…», reached through the same lesson line as the sentence the question matched. What matched: the same action «find» (+3); the same doer «archaeologists» (+3); the same thing acted on «tools» (+2). · the question and its options parsed, with trees and pragmatics

Test 12 · ★★★ · wrong ✗

A cartoon shows Cleopatra watching the Great Pyramid being built. Fix it.

  • 1. The pyramid was already over 2,000 years old in her time — ✓ the right answer · score 5
  • 2. The pyramid was built after she died — ← Mova's choice · score 7
  • 3. She built it herself in AD 30 — score 7
  • 4. She did watch it, in 2560 BC — no support

Why: It took the question to ask which statement is true. It chose option 2 with score 7, tied with another option at 7 (the first shown, or the one claiming less beyond what it knows, wins). Its support: lesson 125, line 3: «Deep time plays tricks. The Great Pyramid, finished about 2560 BC, is about 4,500 years old; Cleopatra lived closer in time to the first Moon landing than to i…», reached through the remembered sentence the question matched. What matched: the same action «build» (+4); the same thing acted on «pyramid» (+3). The right option, 1, scored 5. · the question and its options parsed, with trees and pragmatics

Exam question 1 · formal language · wrong ✗

Ascertain the number of years elapsing between the year 44 BC and the year AD 2026.

  • 1. Two thousand and seventy — ← Mova's choice · no support
  • 2. One thousand nine hundred and eighty-two — no support
  • 3. Two thousand and twenty-six — no support
  • 4. Two thousand and sixty-nine — ✓ the right answer · 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

Exam question 2 · formal language · right ✓

Select the response consistent with the established facts concerning the year designated zero.

  • 1. It is the year in which the Julian calendar was first instituted by Caesar — no support
  • 2. No such year exists, the year 1 BC being immediately succeeded by AD 1 — ← Mova's choice · ✓ the right answer · score 6
  • 3. It is the first year of the Common Era — no support
  • 4. It is the year of the completion of the Great Pyramid — 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 125, line 2: «There is no year 0: 1 BC is followed straight by AD 1. So to find the gap from a BC year to an AD year, add the two numbers and take away 1. Julius Caesar was…», reached through a sentence linked to the one the question matched. What matched: the same action «follow» (+4); the same doer «ad» (+2). · the question and its options parsed, with trees and pragmatics

Exam question 3 · formal language · wrong ✗

Which of the following statements most accurately characterises the relation in time between human beings and the non-bird dinosaurs?

  • 1. The dinosaurs died out approximately 4,000 years ago — ← Mova's choice · no support
  • 2. Human beings appeared before the dinosaurs — no support
  • 3. The two lived side by side for several thousand years — no support
  • 4. The dinosaurs died out some 66 million years before human beings appeared — ✓ the right answer · 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

Exam question 4 · formal language · wrong ✗

Given a timeline of one metre representing two thousand years, determine the length representing a single century.

  • 1. Ten centimetres — ← Mova's choice · no support
  • 2. Five centimetres — ✓ the right answer · no support
  • 3. Twenty centimetres — no support
  • 4. One centimetre — 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

This page in Markdown → https://md.mova.elamur.ai/free/en/school-run/world/125-bc-ad-dinosaurs-pyramids-timelines/