It’s a Nano World Designed for children 5-8 years old - PowerPoint Presentation

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It’s a Nano World

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Designed for children 5-8 years old

Learning

Goal

Nanometer

-sized

things are very

small.

Students

can

understand relative sizes of different

small

things

How Scientists can interact with small

things

. Understand

Scientists and engineers have formed the interdisciplinary field of nanotechnology by investigating properties and manipulating matter at the

nanoscale.

You can be a

scientist

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So How small is

nano

?

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One nanometre is a billionth of a metre

Nanometre is a basic unit of measurement. “Nano” derives from the Greek word for midget, very small thing.

If

we divide a metre by 1 thousand we have a millimetre.

One

thousandth of a millimetre is a micron.

A

thousandth part of a micron is a nanometre.

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271

meters long.

Humpback whales are about 14 meters long.

A full-size soccer ball is 70 centimeters in diameter

 

Raindrops are around 0.25 centimeters in diameter.

Macroscale

Objects

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The diameter of human hairs ranges from 50-100 micrometers.

About

7 micrometers

across

E. coli

bacteria, found in our intestines, are around 2 micrometers long.

 

Pollen

, which fertilizes seed plants, can be about 50 micrometers in diameter.

Microscale

Objects

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The

Ebola

virus, which causes a bleeding disease, is around 80 nanometers long.

DNA molecules, which carry genetic code, are around 2.5 nanometers across.

Water molecules are 0.278 nanometers wide.

 

The

largest naturally-occurring atom is uranium, which has an atomic radius of 0.175 nanometers.

Nanoscale Objects

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Try

this

!

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Mark your height on the wall chart.

How tall are you in nanometers?

Are you super tall? Or is a nanometer super small?

Measure

yourself

in

nanometers

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Then try this!

Trace your hand on a worksheet.

How many nanometers long is it?

Is your hand really big? Or is a nanometer really tiny?

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How to measure Nano technology?

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A nanometer is

really

, really tiny!

Nanoscale science focuses on things that are measured in nanometers, anything

between

1-100 nanometers in size

.

Scientists

use special tools and equipment to work with nanometer-sized things.

Regular tools

like rulers are too big!

Computer chip

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Examples nanotechnology

Red blood cell on a needle

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How difficult is measure

nano

objects?

A strand of your hair is around 75,000 nanometers wide.

One red blood cell is around 7,000 nanometers wide.

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Try

this

!

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Tools used by Scientists

can interact with small things

So There

is already difficult

and only reach the best and tell them to do

it three times to reach the micron and from there three times to reach the

nanometer

... At the same time they can

understand the lack of accuracy

when they try to do it with the scissors ...

1_ Named

some tools

2_ Activity

:

You have a strip of 20 cm.In groups of 4 cut for part of 5 cm.After cut a short decimetre ... hence one centimetre short of one millimetre ...

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What is to be scientist?

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"A scientist is a person who asks questions and tries different ways to answer them."

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A scientist :

Learns from her senses

Notices details

Writes about what happens

Makes comparisons and measuring

D

esigns experiments to test predictions

Experiments by trial and error

Keeps trying over and over

Has fun

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Can

be a?

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A

n

engineer

A doctor

Surveyor

M

arine

biologist

Astronomer

….

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You can

be

a

scientist

,

too

!

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