APIEVocabulary & Pronunciation: History of Timepieces
Clocks and watches through history
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Clocks and watches through history
Learn and practice 10 core words about timekeeping and clock mechanisms.
💡 How to use this lesson
Teacher Note
This 20-minute lesson covers 10 key time-related B1 vocabulary words.
Monitor students through the practice tasks and review their shadowing recordings.
Learner Guide
First, read the word table carefully and check the memory tips.
Then complete the 16 practice exercises and practice speaking all 12 shadowing items aloud.
Word table
Explore the 10 target words across three thematic categories.
1. Old clocks
| Word | Meaning | Common Collocations | Example Sentence | Memory Tip |
|---|---|---|---|---|
| sundial | An outdoor clock that uses the shadow of the sun to show time | ancient sundial, sundial shadow | The garden has an ancient stone sundial. | Sun + dial: it uses the sun to dial the hour! |
| hourglass | A glass container filled with sand to measure a fixed period of time | flip an hourglass, three-minute hourglass | Turn over the hourglass to start the game timer. | Picture sand falling through glass for an hour. |
| pendulum | A weight hung from a fixed point so that it can swing freely side to side | pendulum swing, steady pendulum | The clock's pendulum swings side to side steadily. | Say pen-du-lum slowly and swing your hand: left, right, left. |
| chime | A clear, musical ringing sound made by a clock or bell | loud chime, hourly chime | We heard the church chime ring twelve times at noon. | Chime sounds like a cheerful bell ringing! |
2. Inside a clock
| Word | Meaning | Common Collocations | Example Sentence | Memory Tip |
|---|---|---|---|---|
| spring | A coiled piece of metal that stores energy when wound up | wind the spring, coiled spring | The clock stopped working because of a broken spring. | A metal coil that springs into action! |
| mechanism | A system of moving parts inside a machine that performs a function | clock mechanism, complex mechanism | The complex mechanism inside has many tiny gears. | Mechanism sounds like mechanic, a person who fixes machines. |
| clockwork | The internal mechanism of springs and wheels powering a mechanical clock | like clockwork, clockwork movement | The entire train system runs like clockwork. | Clock + work = the inner work of a clock. |
3. Telling time well
| Word | Meaning | Common Collocations | Example Sentence | Memory Tip |
|---|---|---|---|---|
| overdue | Not done or happening by the expected or required time; late | overdue train, long overdue | The morning train is ten minutes overdue today. | Over + due = past its due time! |
| prompt | Done without delay; punctual and right on time | prompt reply, prompt action | She gave a prompt reply to my urgent message. | Prompt = right ON time! |
| gain | To run too fast, so the clock shows a later time than the real time | gain minutes, gain time | This old wall clock tends to gain two minutes daily. | Gain time = clock gets ahead / runs fast. |
Practice
Complete all 16 practice exercises (Items 1 to 16).
Collocation matrix
Match each verb or descriptive phrase to its natural noun collocation.
Dialogue gap-fills
Fill in the blanks using words from the bank.
Item 5
A: Look at that stone pillar in the garden!
B: It is an ancient ____ that tells time using shadows.
Item 6
A: How do we measure three minutes for this game?
B: Just flip over this small ____.
Item 7
A: Does the new city train system operate well?
B: Yes, everything runs like ____.
Item 8
A: Why are you still waiting at the bus stop?
B: My bus is already fifteen minutes ____.
Choose the word
All options fit the sentence grammatically, but only one matches the intended meaning.
Item 9
She sent the ___ reply to the manager's email within two minutes.
Item 10
This old wall clock tends to ___ two minutes every morning.
Item 11
Every hour, the church tower creates a sweet ___ across the town.
Item 12
The clock stopped because its inner ___ snapped after being overwound.
Sentence building
Unscramble the words to build a correct sentence.
Item 13
Words to arrange: pendulum / The / steadily / swings .
____Item 14
Words to arrange: mechanism / This / perfectly / works .
____Item 15
Words to arrange: is / The / overdue / train .
____Item 16
Words to arrange: gave / She / prompt / a / answer .
____Shadowing
Listen to each prompt and record yourself speaking aloud (Items 17 to 28).
Part 1: Collocations
"a prompt reply"
[Bài tập luyện nói]
____"gain ten minutes"
[Bài tập luyện nói]
____"a steady pendulum"
[Bài tập luyện nói]
____"smooth clockwork movement"
[Bài tập luyện nói]
____Part 2: Everyday sentences
"The train is ten minutes overdue."
[Bài tập luyện nói]
____"She gave a very prompt answer."
[Bài tập luyện nói]
____"This clock gains two minutes daily."
[Bài tập luyện nói]
____"The heavy chime rang at midnight."
[Bài tập luyện nói]
____"A small spring holds the wheel."
[Bài tập luyện nói]
____"Ancient people used a sundial."
[Bài tập luyện nói]
____Part 3: Key word pronunciation
"pendulum"
[Bài tập luyện nói]
____"mechanism"
[Bài tập luyện nói]
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