My Reflections

Through this year's ICT class with Ms.Kavitha, I think I learned a lot of things. With Ms.Kavitha's help, now I know how to make presentations that fits each topic and also how to make a questionnaire. Even though I came almost at the end of the year, but Ms.Kavitha helped a lot that I was able to adjust to this ICT class easily. I also had few tiny problems with ICT works, but since I finished year 7 ICT class, I feel proud. I think I have to say "Thanks a lot, Ms.Kavitha."

Case study 5

Case study-5

Q1. How many different things did you count? What were they? In what ways might computers be used to control different things in the supermarket?

 A1.10 different  things. They are the microwave, GPS, gas fill up, car park barrier, Car reverse sensor that goes beep, robot, automatic door, freezer, conveyer belt, pays with the card. The computer controls the air conditioner, the fans, the freezer, the lights, the conveyer belt, barcode sensor, automatic doors and the room temperature.

Q2. Why is it useful to use computers rather than people to control things? What problems might there be if any of the computer systems fail in the supermarket?

 A2. If we use people to control the machines then it will be slower and it is too much for them to control. People will wait for a very long time to get their turn in line.

Q3. Describe the inputs and outputs for the other devices that we have talked about so far. How do the supermarket doors and car park barriers know when to open? Identify other control systems that work automatically in this way.

A3. Microwave’s input is set the time and output is cook food,Alarm clock’s input is set the time and output is alarm on, Car barriers’ input is swap the card or punch the button, and output is open the door, Supermarket door’s input is move to the door and output is open the door.

Q4.What would happen if the instructions were wrong? These instructions assume that the car is in the right place. What would happen if the car were not there? How could they stop this happening?

A4.If the instrument  were wrong , the robot will drop the wind shield and broke it. If the car was not there the robot will automatically stop. They stop this happen by stop the mechine.

Case study 4.0

Q1. How could Mussie and Ellie find out whether older people do more for charity  than younger people?

A1. Search for the information on the internet.

Q2. Why does Mussie think that these data prove him right? Why might Ellie think that these data do not prove him right?

A2.  1) Because he saw that the amount of older people has donated more money than the younger people. 

        2) Because the data is only from one of the charity website so, on the other charity website it could be different. Also the money the younger people are donating is going up every year and if the trend goes on few years later the younger people will donate more money to the charity. And the chart only shows the amount of money and the not the activities the younger people do.  

Q3.What questions should they ask?

A1. 1) How old are you?

       2) How much money do you give to charity?

       3) How much time do you spend doing charity work?  

Q4. How many questions should they hand out? Who do you think should fill in their questions?

A4. They should hand out around 30 copies.   Adult and teenagers.   

Q5. Which software could Mussie and Ellie use to put the answer into the computer? How can they check that the data are correct? How could they reduce the number of errors of the data? What problems might there be if the data were typed incorrectly?

A5. 1)  Microsoft Excel.  

       2) They can go over the data again to check if they have the correct ones.

       3) Use a calculator and Spell Check for spelling.

       4) -The data won’t be counted

           - The result might be confusing because it’s different from what they expected.

Q6. What is the best way for Ellie and Mussie to present their result?

A6. They can present their result by using a table and charts.