The accuracy of information

What does the words accuracy and accurate mean?

How are they different?

Rate the following websites on accuracy and reliability.
Use the rating scale for
Reliabiliy
Most -1 -2 -3 -4 -5 Least

Accuracy
Most -1 -2 -3 -4 -5 Least

Site 1 www.flat-earth.org/
Accuracy score:
Reliability score:

Site 2 www.upmystreet.com/
Accuracy score:
Reliability score:

Site 3 www.bbc.co.uk/
Accuracy score:
Reliability score:

Site 4 www.ovaprima.org/mission.html/
Accuracy score:
Reliability score:

Site 5 www.amazon.co.uk/
Accuracy score:
Reliability score:

Share your answers in the class.

A visit to the LIBRARY

People visit the library to look for information.

As you think of designing your web based information resourse it is very important to find from the library how the information is presented in the print media.

You will look for information based on enviroment interms of
-Advertisement for business, tourism and study
-Protection and conservation

You will use a variety of resources from journals, magazines, newpapers and books.

You need to design a grid to fill in the information you get.

Type of source Type of Information Layout


You will use the grid in the library during the next lesson.
The design of the grid is of your choice and it will be graded on layout, content sought and tracking evidence.

Website Review Activity

This activity is to be done after describing the parts of a website and the usefullness on these parts.

Identify a website on coastal environment. Review the website based on the parts such as counters, navigation, date last updated, links and advertisement.

a)Write an analysis of the website.

b)Write a recomendation for the website.

Mail it to gioko@akam.ac.ke

Parts of a WEBSITE

A websites may contain
Links
Advertisements
Date of last update
Counters

What are these parts?

Why are they useful in a Website?

Navigation is how one moves around in a website, through buttons, icons and keys.

Explain why navigation is important in a website.

Some key navigation terminologies are BACK and HOME what do they mean?

SHARE YOUR WORK

URL

What is a URL?

Predict the URL for the following companies

Tesco
MArks and Spencer
Amazon
Thomson Holiday
Nakumatt
Nation Media
The BBC
Kenya Airways
Kenya Wildlife service
Scuba diving

Write down the predicted URL.

Now Check out the URL in Google

Write a reflection on your performance.

SHARE YOUR WORK

Reliability of information

There is a Subtle diffrence between some of the terms ACCURATE and RELIABLE.

Briefly explain your understanding of the term Reliability.

List some of teh sources of information that you think are reliable e.g the school timetable...

Type the word Reliability in a word document.
Use thesaurus and find out other words which imply the same meaning.

Briefly explain the meaning of reliable information NOW.

Send your work to gioko@akam.ac.ke
Please make sure the subject reads MYPCT Reliability of information.

Information: Reliability, validity and bias: Bogus Information

Bogus Information

What is bogus information?
Write a sentense describing what is bogus information?

Spot bogus information

Visit the websites and write a paragraph about each website. The paragraph should explain the nature of the information presented by the website
Site 1: www.glsc.genetics.utah.edu/
Site 2: www.genochoice.com/
Site 3: www.zapatopi.net/afdb.html#WHAT
Site 4: birdfood.co.uk/
Site 5: www.pestorfood.com/

Type your work and send it to gioko@akam.ac.ke
Point to reflect on "Why should anyone put in time and effort to creat bogus sites"

Creating Models: Spreadsheets

INFORMATION TECHNOLOGY
Creating Models: Spreadsheets

1. Give the cell reference of the cell:
a) below G5
b) to the right of A4

2. If the range of cells from A4 to A8 is A4:A8 give the range for:
a) the five cells to the right of G7,
b) the four cells below G7,
c) the four cells to the left of G7.

3. Use the SUM function to give:
a) the total of the five cells below G6,
b) total profits for the year if January’s profits are in C5, February’s in C6, and so on.

4. In a spreadsheet, cell B5 contains the cost of an item excluding VAT and cell C5 contains the amount of VAT to be paid. Cell D5 contains a formula for the total including VAT. Is it:
a) =C5+D5
b) =B5+C5
c) =B5+100*C5
d) =B5*C5

5. What else can you put in a spreadsheet besides text and numbers?

6. What type of operation can you do on a spreadsheet which you cannot do on a database?

7. Name three different operations which you would expect to be able to carry out on text in a spreadsheet cell.

8. Name three different types of number format you would expect in a spreadsheet cell.

9. What is the difference between an absolute cell reference and a relative reference?

10. If a spreadsheet is used to produce a model of a situation:
a) where are the variables of the model?
b) how are the rules which govern the behaviour of the model written?

Data Manipulation-Formulaes

In the excell enviroment we can use arithmetic operations/numeric functions to
perform calculations
they include addition, subtraction, multiplication,division, sum, average, maximum,
minimum, count
This done by enetering Formulaes

Use the following data and use the formulaes to make a reporst

John Assingment 1 40/50 Assingment 2 16/20 T0TAL (Calulate/100)
Peter Assingment 1 30/50 Assingment 2 8/20 T0TAL (Calulate/100)
Mary Assingment 1 25/50 Assingment 2 10/20 T0TAL (Calulate/100)
Jane Assingment 1 45/50 Assingment 2 18/20 T0TAL (Calulate/100)
Average (Calculate) (Calculate) (Calculate)
Maximum (Calculate) (Calculate) (Calculate)
Minimum (Calculate) (Calculate) (Calculate)


Determine the class average score for Assigment1, Assignment2 and the Total
Identify the highest and the lowest score in each task.(Hint use =MAX(cell1, cell2...) and =MIN(cell1, cell2...)

Send you attached spreadsheeet to gioko@akam.ac.ke

Computer Networks-Security

We have been looking at computer networks.

Today we shall look at the following
-identify the need for encryption
-authentication techniques including the use of
-User identification
-passwords
when using common network environments such as the Internet.

Answer the following questions
-What is encryption?
-Why do we need it?
-What is authentification?
-How does it use useridentification and password as security measure?

Save the file as Computernetworks-Security(Your Name)

Send your responces to gioko@akam.ac.ke