1. 2 5 1 4 Topic 3 Spreadsheets and Modelling Lesson 1 Introducing the Unit

2. 2 5 1 4 What are we learning today? We are learning to use spreadsheet models to answer what if…? questions What I’m looking for using spreadsheet features to find the answers rather than working them out ourselves This is because spreadsheet models can be used to analyse data in complicated ways so that we can find the answers to questions

3. 2 5 1 4 Your Task Worksheet Answer the questions about the financial model of a zoo

4. 2 5 1 4 Terminology Recap Numeric data Text labels Columns (letters) A worksheet Text labels Rows (numbers) Each cell has a unique cell reference e.g. D13 Column D Row 13

5. 2 5 1 4 Formula Start with = then create formula When you press Enter, the formula will automatically be calculated. The formula can also be viewed and edited here in the formula bar

6. 2 5 1 4 By dragging the fill handle,you can copy and paste the formula into other cells What formula should have been generated in cell E7? The data can be sorted in alphabetical or numerical order – using the AZ icons The data can be displayed on a chart using the Chart Wizard icon C7*D7

7. 2 5 1 4 What is a model? (In ICT terms!) Tool that enables you to put different data into a system and look at the outcomes it produces Tool you can use to ask ‘what if…’ questions by changing variable or formulae

8. 2 5 1 4 Why use a spreadsheet? Speed Accuracy Automatic calculations Data can be changed easily

9. 2 5 1 4 In this unit you will learn: To use a spreadsheet to generate models To ask questions of the models in order to analyse and present data To use techniques to generate more effective models To understand the relationship between input and output values in a model To discuss other types of modelling that can be used to simulate different events

10. 2 5 1 4 Spreadsheet Exercises Go onto the VLE ICT > Years 7-9 > Year 8 > Topic 3 – Spreadsheets and Modelling > Lesson 1 Lesson 1 Spreadsheet Exercises.xls Follow the instructions on screen to complete the exercises

11. 2 5 1 4 Imagine a School Fete Go onto the VLE ICT > Years 7-9 > Year 8 > Topic 3 – Spreadsheets and Modelling > Lesson 1 Lesson 1 Spreadsheet Practise.xls Use the worksheet to complete the spreadsheet

12. 2 5 1 4 Plenary What is a model? What does a formula always start with? What is the symbol for multiplication in a formula?

13. 2 5 1 4 Homework Spreadsheet Crossword of key words