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1. Warm-Up Questions

Start the lesson with simple personal questions. Encourage the student to describe experiences and feelings.

Discussion Questions

• Have you ever felt that a moment already happened before?
• Where were you when this happened?
• What were you doing?
• Did the place feel familiar?
• Did you feel confused or surprised?
• How long did the feeling last?
• Did you tell someone about the experience?
• Do you think déjà vu is connected to memory?
• Do you think déjà vu has a scientific explanation?
• Some people think déjà vu is mysterious. What do you think?

Helpful starter phrases

• One time I experienced déjà vu when…
• I remember a moment when…
• I suddenly felt that…

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2. Key Vocabulary

Word	Meaning
déjà vu	A feeling that the present moment already happened before.
memory	Information stored in the brain.
brain	The organ that controls thoughts and memories.
familiar	Something that feels known.
moment	A short period of time.
experience	Something that happens to a person.

Example sentences

• I had a strange experience yesterday.
• This place feels very familiar.
• My brain remembers many things.

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3. Reading Passage

What Is Déjà Vu?

Many people experience déjà vu at some moment in their lives. The phrase comes from French and means “already seen.”

During déjà vu, a person suddenly feels that the present moment already happened before. The person may feel that they already saw the place, heard the conversation, or lived the exact same situation.

The feeling is usually very short. It may last only a few seconds. After that, the strange feeling disappears.

Scientists believe déjà vu is connected to how the brain processes memories. The brain receives information from the eyes, ears, and other senses. Normally, the brain understands that this information is new. But sometimes the brain mistakenly treats the new moment as if it were an old memory.

Because of this small confusion, the person feels that the moment already happened before.

Even today, scientists are still studying this phenomenon to understand exactly why it happens.

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4. Diagram

How the Brain Normally Processes a Moment

Something happens
      ↓
Your eyes and ears receive information
      ↓
Your brain processes the information
      ↓
The brain understands this is a NEW moment
      ↓
The moment becomes a memory later

Explanation model students can use

• First something happens.
• Then our senses receive information.
• The brain processes the information.
• Finally the brain understands this is a new experience.

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5. Reading Passage

Why Does Déjà Vu Happen?

Scientists have several possible explanations for déjà vu. The most common explanations are related to memory and brain signals.

One idea is that the brain receives information two times. The first signal arrives normally, but the second signal arrives a little later. When the second signal arrives, the brain thinks the information is already a memory.

Another explanation is that the brain recognizes something similar to a past experience. A place, smell, or sound may remind the brain of something from the past, even if the person does not clearly remember the original memory.

Because of this similarity, the brain feels that the moment already happened before.

Some scientists also believe that déjà vu is simply a small mistake in the brain’s memory system.

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6. Diagram

Possible Brain Delay

New moment happens
      ↓
Brain receives information
      ↓
Signal 1 arrives
      ↓
Signal 2 arrives slightly later
      ↓
The brain thinks the moment is a memory
      ↓
You feel déjà vu

Student explanation model

• The brain receives the same information two times.
• Because of this delay, the brain thinks the moment already happened.

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7. Reading Passage

Similar Experiences

Sometimes déjà vu happens because two situations are very similar.

Imagine you visit a new restaurant. The restaurant is new, but it has a similar table, similar lights, and similar music to another restaurant you visited years ago.

Your brain recognizes these details and connects them to an old memory. But you may not clearly remember the old experience.

Because of this connection, the brain creates the strange feeling that the present moment already happened before.

This type of déjà vu happens because the brain is very good at recognizing patterns and similarities.

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8. Diagram

Similar Memory Explanation

New place or situation
      ↓
Brain recognizes something similar
      ↓
Brain connects to an old memory
      ↓
Brain becomes slightly confused
      ↓
Feeling of déjà vu appears

Student explanation model

• The brain sees something similar.
• Then the brain connects this moment with an old memory.
• Because of this connection, we feel déjà vu.

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9. Discussion Questions

Encourage longer answers and explanations.

• Do you experience déjà vu often?
• When was the last time it happened?
• Do you think déjà vu is connected to memory?
• Do you think animals experience déjà vu?
• Do you think déjà vu is only a brain mistake?
• Some people think déjà vu means the future already exists. Do you agree?
• Do you think dreams could be connected to déjà vu?

Useful speaking connectors

• I think…
• In my opinion…
• I believe this happens because…

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10. Writing Task (For Comments)

Students should write a short explanation in the comments section.

Prompt

Have you ever experienced déjà vu?

• Describe the experience.
• Explain why you think déjà vu happens.

Students should write 5–8 sentences.

They may also answer this question:

Do you believe déjà vu is scientific or mysterious?