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Spreadsheets. Lesson 1: Introduction. Lesson Objectives. To understand what a spread sheet is and how it can be used To identify the features of a spreadsheet To use basic formulae within excel. What is a spreadsheet ?. - PowerPoint PPT Presentation
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Spreadsheets
Lesson 1: Introduction
Lesson Objectives• To understand what a spread sheet is
and how it can be used• To identify the features of a
spreadsheet• To use basic formulae within excel
What is a spreadsheet?• A spreadsheet is used for storing
information and data. Calculations can be performed on the data in a spreadsheet
• Will be using Microsoft Excel to create and edit spreadsheets
• http://www.bbc.co.uk/bitesize/ks3/ict/software_applications/spreadsheets/activity/
• Section 1
This is a spreadsheetWhat is this?
What is this?
What is this?
Cell ReferenceEvery cell has a unique name called a Cell Reference. The cell reference
for this cell is D12 The cell reference for this cell is G15
What do we use a spreadsheet for?• Spreadsheets aren’t just used to hold
tables of data. • We can use them to do calculations,
like adding, subtracting, multiplying and dividing.
• We do this using a FORMULA
A B C
1
2
3 5 6 = A3
Let’s add the numbers in cells A3 and B3All formulae start with an = signThen put the cell reference of the first cell
A B C
1
2
3 5 6 = A3 +
Let’s add the numbers in cells A3 and B3All formulae start with an = signThen put the cell reference of the first cell+
A B C
1
2
3 5 6 = A3 + B3
Let’s add the numbers in cells A3 and B3All formulae start with an = signThen put the cell reference of the first cellThe cell reference of the second cell+
Using Formulae in SpreadsheetsA B C
1
2
3 5 6 11
The correct answer will now be displayed when you press ENTER
Using Formulae in SpreadsheetsA B C
1
2
3 5 6 11
If you change one of the numbers used in the calculation
10
Using Formulae in SpreadsheetsA B C
1
2
3 5 6 11
If you change one of the numbers used in the calculationThe answer is automatically updated
1610
Using Formulae in Spreadsheets
Sum Symbol Used in a Spreadsheet
Example
Adding + = A1 + B2
Using Formulae in Spreadsheets
Sum Symbol Used in a Spreadsheet
Example
Adding + = A1 + B2
Subtracting - = A1 – B2
Using Formulae in Spreadsheets
Sum Symbol Used in a Spreadsheet
Example
Adding + = A1 + B2
Subtracting - = A1 – B2
Multiplying * (star) = A1 * B2
Using Formulae in Spreadsheets
Sum Symbol Used in a Spreadsheet
Example
Adding + = A1 + B2
Subtracting - = A1 – B2
Multiplying * (star) = A1 * B2
Dividing / = A1 / B2
Try out some formulae• Go to Common
K>ICT>YEAR7>Spreadsheets• Open the file Lesson 1 Workbook• Complete the tabs called Task 1 and
Task 2
Speeding up addition• Sometimes you
might have to add a lot of numbers together. If you did this using the + formula it would take a very long time
• Instead we can use a SUM formula
A1 42 33 54 65 46 97 108
Speeding up addition• Just like every formula
it starts with an =• As it’s a SUM formula,
type SUM• Open brackets• Highlight all the cells
that you want to add togeher. It will come up like this (A1:A7)
• Close the brackets• Press enter and the
answer will appear
A1 42 33 54 65 46 97 108 =SU
M(A1:A7)
Speeding up addition• Just like every formula
it starts with an =• As it’s a SUM formula,
type SUM• Open brackets• Highlight all the cells
that you want to add togeher. It will come up like this (A1:A7)
• Close the brackets• Press enter and the
answer will appear
A1 42 33 54 65 46 97 108 41
Try out some SUMS• In the workbook have a go at task 3
and Task 4