[uplifting music] - Hello, everyone.

Welcome to the Brooklyn Preschool of Science.

My name is Krystal, and I'm here with my friend, Sahil.

Sahil, can you please say hello?

- Hello.

- Together, we will do some hands-on science activities.

I love science.

Science is so important in today's life.

Studying science encourages curiosity and an attitude of discovery.

Together, we're gonna do some hands-on science activities and for our first ones, Sahil, are you ready?

- Yeah.

- I would like to start talking about those tiny ridges found on the tip of our fingers, those lines.

Can you take a moment, look at the tip of your fingers?

What are those lines called?

Do you know?

- Our fingerprints.

- Good job, Sahil.

Fingerprints, high five.

[hands clapping] Ah, you're so strong.

[chuckles] We are going to learn about our fingerprints, what they are, the different patterns, how to collect them, and how to identify them.

Our fingerprints are so unique.

No two people in the world have the same fingerprints, not even identical twins.

Our fingerprints never change even as we get older.

Every time we touch something, we leave prints behind.

There are three main fingerprint patterns.

I'm going to show you a closeup of each one.

Are you ready?

- Yeah.

- Okay.

So the first pattern is called the arch.

Do you see this?

- Yeah.

- Arches slope upward and then down, like very narrow mountains.

Can you see the narrow mountain in there?

- Yeah.

- Ooh.

Arches, okay?

So that's the first fingerprint pattern.

- Yeah.

- The second, loops!

- Loops!

- Yes.

Loops begin on one side of the finger, curve around or upward, and exit on the other side.

And the third main fingerprint pattern is whorls.

- Whorls.

- Yeah.

Do you see that?

Kind of like a whirlpool in the middle there?

- Yeah.

- Whorls form a circular or a spiral pattern.

Today, you know what we're gonna do, Sahil?

- Yeah.

- I'm going to show you how we can take the fingerprints, your fingerprints.

- Yeah!

- We're gonna lift them.

We're gonna put them down on a piece of paper, and then you'll be able to identify each pattern.

- Yeah.

- If you're ready, say oh, yeah.

- Oh, yeah.

- Okay, scientist, let's look at the materials we have here at the table, okay?

I have some, what is this?

- Pencil.

- Pencils, yeah.

- Pencils.

- And this?

- Tape.

- Some clear tape.

- And this tool.

Do you know what this is called?

- Magnifying glass.

- Good job, a magnifying glass.

A magnifying glass, it helps us closely observe things that are so small for the naked eye alone.

And we have our fingerprint identification sheet.

Do you see what's on the sheet here, Sahil?

What are those?

- [Sahil] Hands.

- That's right, right hand, left hand, the three main fingerprint patterns, and there's a square right here on the side.

- Yeah, square.

- Yeah, okay, for first step, we're gonna choose which hand.

So do you wanna choose your left hand or your right hand?

- Right.

- Right hand, okay.

- Okay, the pink.

- You wanna start with your pinky, okey dokey.

Okay, so we're gonna, first step, before we even look at your fingers, we're gonna take this pencil here.

Now, the pencil- - And I'm gonna rub it.

- That's right.

Look, I'm gonna show you real quick.

We're gonna take the graphite from the pencil, and we're going to rub it on the paper right inside the square box.

[pencil scratching] Would you like to help me, Sahil?

- I, yeah.

- There you go.

[pencil scratching] Good job, okay, so now- - Next, my pinky.

- Well, first, I just wanna show the graphite that is in the box right there in the square.

Now, we're gonna take Sahil's pinky finger, and we're going to rub it right onto that graphite right there.

We're gonna rub the graphite with his finger.

Rub, rub, rub, rub, rub, rub, rub.

- Rub, rub, rub.

- And now, let's look at the finger.

[gasps] Whoa, see?

- Ooh.

- And now look at the graphite on his pinky finger.

And the next step is, I'm gonna take a piece of tape, [tape reel ripping] and I'm gonna put it right on his finger, right above the graphite, okay?

And I'm going to carefully lift the tape now.

And if you look closely at the tape, look, Sahil, your fingerprint is on here.

- Yeah.

- We just lifted your fingerprint.

And we're gonna paste it down on the paper like that, you see?

[paper rustling] - Yes.

- And we're gonna do the same thing with the other fingers, okay?

- We need to do it.

- We're gonna move on to the ring finger now, okay?

- Yeah, the ring.

- So what's the first step?

Do we put tape on first?

- But- - Do we put tape first?

- No, we rub the pencil.

- We actually, so here you go.

Take the pencil, add some more graphite.

[pencil scratching] Good job, and now, we're gonna take your, the next finger, which is your ring finger.

- My ring.

- Yes, and can we rub it on here, please?

I'll help you, okay?

Rub, rub, rub, rub, rub, rub, rub, rub, rub, rub, rub, rub.

Awesome, and now, I'm gonna take another piece of tape, [tape ripping] put it on your finger.

Just like that, press and then lift.

And there we go.

We have another fingerprint.

And just look at your fingerprints.

- Wow.

- Whoa, look.

And now, now that we've collected the fingerprints, let's identify them, okay?

So which tools should we used?

Oh.

- The magnifying glass.

- The magnifying glass, yes.

So Sahil, I would like you to closely observe each fingerprint, look at them.

And now, if you want, would you like to use this one?

- Yeah.

- Sure.

[jovial music] Yes, let's closely observe each fingerprint.

And now, let's see, we're gonna start with one finger, okay?

- One.

- Let's try the middle finger right here.

You see this print here, Sahil?

- Yeah.

- So actually, we're not gonna look at your finger.

I would like you to look at the fingerprint.

Look closely.

Which pattern do you think that is?

Do you think that pattern, do you think this print looks like the arch, the whorl, or the loop?

- This one.

- The whorl?

- Yeah.

- Good job!

Give me five, you're awesome.

So Sahil- - Next.

- What's next?

Which finger's next?

Do you wanna try- - This one.

- Well, remember, we used the right hand.

So did you wanna check your pinky?

- Yeah.

- Okay, so here, take your magnifying glass and look closely at that.

Look at that fingerprint.

What do you think?

Do you think it looks like the loop, the arch, or the whorl?

- This.

- The arch?

Can you say that?

Arch.

- [Sahil] Arch.

- Good job.

So now Sahil, really quickly, we're gonna just take a moment, we're gonna pause, and let's just review everything that we just learned, okay?

- Yeah.

- We learned that the fingerprints are the tiny ridges located on the tips of our fingers, right?

- The lines?

- Yes, we learned that there are three main fingerprint patterns: arches, whorls, and loops, right?

- Yeah.

- And now, you also have learned how to lift them, lift your own fingerprints, paste them down onto a paper, and now you can identify your fingerprint patterns.

At home, Sahil- - Yeah.

- You can try this on an adult at home, a friend at home, a family member, or maybe even at school.

- I.

- You can, your classmates.

And you know what?

- Yeah.

- Something fun to do afterwards, maybe collect some toe prints.

- Oh.

- Would you like to do that?

- Yeah.

- All right, do you think science is cool?

- Yes!

- That's right, if you think science is cool, say oh, yeah.

- Oh yeah.

- See you soon, bye-Bye.