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 ware_applications/spreadsheets/activity/ ware_applications/spreadsheets/activity/ Section 1

This is a spreadsheet What is this?

Cell Reference Every 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

ABC = A3 Let’s add the numbers in cells A3 and B3 All formulae start with an = sign Then put the cell reference of the first cell

ABC = A3 + Let’s add the numbers in cells A3 and B3 All formulae start with an = sign Then put the cell reference of the first cell +

ABC = A3 + B3 Let’s add the numbers in cells A3 and B3 All formulae start with an = sign Then put the cell reference of the first cell The cell reference of the second cell +

Using Formulae in Spreadsheets ABC The correct answer will now be displayed when you press ENTER

Using Formulae in Spreadsheets ABC If you change one of the numbers used in the calculation 10

Using Formulae in Spreadsheets ABC If you change one of the numbers used in the calculation The answer is automatically updated 1610

Using Formulae in Spreadsheets SumSymbol Used in a Spreadsheet Example Adding+= A1 + B2

Using Formulae in Spreadsheets SumSymbol Used in a Spreadsheet Example Adding+= A1 + B2 Subtracting-= A1 – B2

Using Formulae in Spreadsheets SumSymbol Used in a Spreadsheet Example Adding+= A1 + B2 Subtracting-= A1 – B2 Multiplying* (star)= A1 * B2

Using Formulae in Spreadsheets SumSymbol 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 A

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 A = SUM (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 A

Try out some SUMS In the workbook have a go at task 3 and Task 4