Lesson Six looks at the internet, networks, the Internet of Things (IoT), and cloud computing. In this lesson you will:
Define the internet
Complete a network activity
Design your own Internet of Things device
Complete a cloud computing activity
Watch the video and make notes. Write your own definition of ‘The Internet’. Compare it to your neighbours’ definition. Have you written the same thing?
We use the internet for lots of different things. Can you think of at least three devices that are connected to the internet?
Devices that are connected to the internet are linked together in a network. This allows them to talk to one another.
In your group, stand in a circle with everyone facing inwards. One person will start of with a ball of string. Keeping hold of the end of the string, they will pass the ball to a random person in the circle, unraveling the ball as they go. The person who catches the ball will take hold of the string, and pass the ball to a different person. This keeps going until everyone in the circle has a hold of the string, and then the ball is passed back to the original person.
You now have a ‘web’ or network in the centre of the circle where all the students are linked by the string. Holding the string in one hand, you will now start to pass a message around. The teacher will give a note written on a piece of paper to a student who wasn’t the first one holding the string. They will pass the note to someone in their network – that is, someone they are connected to by the sting. Can you get the information to everyone in the network following these rules?
Internet of Things
The Internet of Things (IoT) is a network of devices that are connected over the internet and can communicate with each other and with us to share data. The Electric Garden is an Internet of Things device. It is connected to the internet and sends data through a network.
Come up with an Internet of Things device that could help with your garden. It could be special clothing, gardening tools, or equipment to help with accessibility. Think about
Who can use the item?
How much will it cost to make and buy?
Who is going to make it?
What special features does it have?
How secure is your device?
When you log on to the Electric Garden, the data that you can see is not stored on your computer, it is actually stored in the cloud!
The ‘cloud’ or ‘cloud computing’ is a way of storing data on the internet. Rather than saving the information directly to your computer, which takes up lots of space, you can upload the information to a series of very large computers that are designed to store information. These large computers are kept in data centres, and they are all over the world! The data generated by your Electric Garden is sent to a data centre in Sydney. The information is then copied and sent to at least four centres across the globe.
Is it on the Cloud?
Look through the applications below. Which do you think use cloud computing? How do you think they do this?