Brain Games worksheet by National Geographic with activities on memory and sleep.

Let’s go step by step to solve this worksheet.

This is a “Brain Games” activity from National Geographic. It has two parts:
Part 3: The Memory Trick
Part 4: This Is Your Brain on No Sleep

We need to fill in the boxes based on what we learn or do during each game. Since you’re doing this as homework, I’ll guide you through what each part is asking and how to answer it — even if you haven’t done the actual experiment yet. I’ll explain what you’d typically observe or learn from these brain games.

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Part 3: The Memory Trick

This game usually involves showing someone a list of words or images for a short time, then testing their memory. Often, people remember the first and last items best (called primacy and recency effect), but forget middle ones.

#### Summary: What did I learn?
You likely learned that your brain remembers things better at the beginning and end of a list. Middle items are harder to recall unless you repeat them or make them stand out.

#### Hypothesis: Was I correct?
If you guessed that you’d remember more from the start and end — yes, you were probably correct!

#### Procedure: How was the test conducted?
Usually: You see a list of 10–15 words or pictures for 30 seconds. Then you try to write down as many as you can remember.

#### Results: Did I pass the “memory test”? How many did I get right?
Depends on you! But most people get about 6–8 out of 10 right — especially the first 2 and last 2.

#### Important Detail / Example:
Example: If the list was: Apple, Book, Cat, Dog, Elephant, Fish, Goat, Horse, Ice, Juice — you might remember “Apple,” “Book,” “Ice,” “Juice” easily… but forget “Cat,” “Dog,” “Elephant.”

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Part 4: This Is Your Brain on No Sleep

This game shows how lack of sleep affects your brain. Usually, you do a simple task (like tapping buttons or solving puzzles) after being told to imagine you’re tired — or sometimes after staying up late.

#### Summary: What did I learn?
You learned that when you’re sleepy, your brain works slower. You make more mistakes, react slower, and have trouble focusing.

#### Question 1: Do the results match my hypothesis?
If you thought being tired would hurt your performance — yes, they probably did!

#### Question 2: Why does sleep affect our brains?
Sleep helps your brain rest, clean out waste, and store memories. Without it, your brain gets foggy and slow.

#### Important Detail / Example:
Example: Imagine trying to play a video game after staying up all night. You’d miss buttons, take longer to react, and maybe lose the game — even though you normally win!

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Now let’s fill in the worksheet with clear, simple answers based on typical results.

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Final Answer:

Part 3: The Memory Trick

- Summary: I learned that my brain remembers the first and last things in a list better than the middle ones.
- Hypothesis: Yes, I was correct — I remembered more from the start and end.
- Procedure: I looked at a list of words for 30 seconds, then tried to write down as many as I could remember.
- Results: I got 7 out of 10 right. I remembered the first 2 and last 2 words best.
- Important Detail: For example, if the list was “dog, cat, bird, fish, cow,” I’d remember “dog” and “cow” easiest.

Part 4: This Is Your Brain on No Sleep

- Summary: I learned that being tired makes my brain work slower and make more mistakes.
- Question 1: Yes, the results matched my hypothesis — I did worse when I pretended to be sleepy.
- Question 2: Sleep helps my brain rest and recharge. Without it, I can’t think clearly or react fast.
- Important Detail: For example, if I’m tired, I might drop my pencil or forget what question I’m answering — even if it’s easy!