1. www.yahoo.com

2. www.msn.com

3. www.google.com

4. Year 4 Science textbook

5. Year4 English textbook

1. Technology Around Us 1

i. Human Limitations 1-5

ii. Development Of Technology 5-12

i. Tecnology in Agriculture

ii. Technology in Communication

iii. Technology in Transportation

iv. Technology in Construction

iii. Solving Problems 13

iv. Advantages and Disadvantages 14

Topic : Technology Around Us

Lesson 1: Human Limitations

Every human being in this world have limit what they can do.Humans cannot go above

the limit of theirs.If they do they will fall into migrant.Humans limits what they can do

are such as in the list shown.

1. Run

2. See

3. Hear

14. Taste

5. Touch

6. Carry Objects

2

What can’t our limit doesn’t exist.Our limit can’t exist such as shown down.

1. We cannot hear or see things which are tiny,too soft or well-hidden.

2. We cannot fly or walk very fast or too far .

But now there are so many technologies.Now days humans are able to overcome their limitataions because they are so many interesting devices with so much technology.Devices are used to overcome the limitations and problems faced by human beings in this world.

There are many devices such as shown.

Examples for unable to see the fine details ofan object:

1. Telescope

2. Microscope

3

3. Magnifying Glass

Examples for unable to speak loud enough for someone to hear:

1. Megaphone

2. Microphone

Examples for unable to walk long distances:

1. Car

4

2. Train

3. Aeroplane

Do You Know

Night vision goggles can be used to see humans in the dark.X-ray allows us to see in the

body. Metal detectors detect objects below the ground.

5

Lesson 2: Development of Technology

Technology In Agriculture

Humans develop technology for the betterment of mankind. This development has made

the world a better and more comfortable place to live in.

Stick Bones Of Animals

A long time ago,simple devices are used to dig holes, and loosen the soil.

Hoe

When humans discovered metal, they invented devices to plant crops.later, animals were used to plough the land.

First Tractor Modern Machineries

These devices take a long time to complete the work. As the population increases,

humans need to plant more crops.Work need to be done more quickly. Tractors were

invented to replace the work done by humans and animals.

6Technology In Communication

Humans send messages a long time ago by:

1. Drawings

2. Smoke Signals

3. Beating Dreams

4. Carrier Pigeons and Post

5. Telegraph

6. Telephone,Radio,Television

Telegraph and devices such as the telephone allow humans to communicate with each

other in far away places. Today, these devices are known as telecommunication

technology.We can communicate with this devices from our country to anywhere.

Now days humans communicate by:

1. Teleconferencing

2. Computer

3. Handphone

7

4. Fax Machine

The above devices for communication is communicating to others is by Satelite.

8

Technology In Transportation

Long time ago,humans use water transport.Because,many places in the world was full with water.Tey use small boats on water for transport.

Besides land transport, humans also develop better and faster water and air transport. These devices shorten the travelling time. They allow humans to travel to far away places.Examples:

9

Now days the transportation that is based above needs oil to use.

10

Technology In Construction

Long time ago, humans lived in caves and built houses from clay and parts of plants.However,these shelters were notsafe.They were not strong and were easily destroyed.They were not stable at all.

Today,most houses are built using bricks,concrete and steel.These materials are stronger and stable.

Humans are now able to build bigger and taller buildings.There are too stable and safe to live in.

11

The construction of bridges has undergone many changes.Describe some of the changes in the pictures above.

12

Lesson 3: Solving Problems

Here are some examples of problems that you may encounter in your classroom.

We cannot stand anysecond if we there are all over

in the dust.If we do we wil get sick.

Some peoples cannot remember things so long.They will just forget something in a while . People who are like that will lose many of their things.

We can solve this if we invent any devices.

13

Lesson 4: Advantages and Disadvantages

There are many things that has advantages and disadvantages such as a example shown.

Example:

Advantage : To keep food and drink cold or hot. It is cheap. Disadvantage: It is not good and safe for nature

14