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Teacher’s notes included in the Notes PageFlash activity. These activities are not editable. Web addresses Icons key: For more detailed instructions, see the Getting Started presentation © Boardworks Ltd 2007 1 of 21 Introduction to Spreadsheets Software
Teacher’s notes included in the Notes PageFlash activity. These activities are not editable. Web addresses Icons key: For more detailed instructions, see the Getting Started presentation © Boardworks Ltd 2007 2 of 21 Learning objectives © Boardworks Ltd 2007 2 of 21 Understand the advantages of using spreadsheets. Understand the basic formatting functions that can be used with spreadsheets. Know how to use basic functions and the advantages of displaying data in charts.
© Boardworks Ltd 2007 3 of 21 Why use spreadsheets?
© Boardworks Ltd 2007 4 of 21 Spreadsheets can: do all sorts of calculations, both simple and complex, using formulas recalculate things quickly when the numbers change use functions to help you set up complex formulae act as simple databases so that you can sort or search your data plot charts and graphs change the appearance of fonts, cell backgrounds and borders control how many decimal places are shown. What does the software do?
© Boardworks Ltd 2007 5 of 21 Basic features
© Boardworks Ltd 2007 6 of 21 Tracking marks – on paper
© Boardworks Ltd 2007 7 of 21 The teacher makes a table of names and assignments. What formatting changes could you make to this table so that the information is better presented? Cell Borders Table border Centred text Merged cellsLabelsBold font Shaded backgrounds Tracking marks – on computer
© Boardworks Ltd 2007 8 of 21 The teacher enters the marks, leaving a blank cell if the student was absent, but putting a 0 if the student did not hand in their work. Tracking marks
© Boardworks Ltd 2007 9 of 21 The teacher can use a formula to work out the average grade for each student… and then replicate it for the other students. Using and replicating formulas
© Boardworks Ltd 2007 10 of 21 But there’s a problem – can you see what it is? Bethany was absent for one assignment, so her results need to be divided by 4 not 5. The Average function does this automatically. Using a function
© Boardworks Ltd 2007 11 of 21 What else can it do?
© Boardworks Ltd 2007 12 of 21 Functions can help the user to: look up data from lists do specialized calculations in subjects like finance, statistics and trigonometry experiment with questions, such as “What if the interest rate went up by 1%?” use logic such as IF, AND and OR change the format of a cell depending on what is in it (conditional formatting) use pivot tables to summarize data reduce the number of input errors by setting rules (validation). What else can it do?
© Boardworks Ltd 2007 13 of 21 Nail that function
© Boardworks Ltd 2007 14 of 21 Revise those functions
© Boardworks Ltd 2007 15 of 21 If we look at the data in a table, it’s quite hard to understand exactly what is happening. The average tells us who is generally getting the best marks, but not who is getting better or worse. Limitations of tables
© Boardworks Ltd 2007 16 of 21 Using charts Charts give us a picture of our data, and that can help us to see patterns. This chart shows us that Michael is quite consistent (he usually gets about the same mark), and Danny was improving until his last test.
© Boardworks Ltd 2007 17 of 21 It is very important to choose the right type of chart if we want to see the patterns in the data clearly. The second chart is plotted from the same data, but doesn’t tell us very much about what is happening. Choosing the right chart
© Boardworks Ltd 2007 18 of 21 Label the chart
© Boardworks Ltd 2007 19 of 21 We don’t always have to show all the information. If we choose only what we want to show, the patterns we see should become clearer. Choosing the right chart This…is clearer than this
© Boardworks Ltd 2007 20 of 21 Spreadsheets are used by: engineers to test whether structures are strong enough business managers to model their finances scientists to simulate what might happen in different circumstances teachers to calculate marks and grades. Who would use it?
© Boardworks Ltd 2007 21 of 21 Spreadsheet software is mostly used for simple and complex calculations using formulas. Spreadsheets are also very useful for plotting charts. They can be used to sort and search data. Functions make it easier to set up complicated calculations. Spreadsheet simulations can model situations so that you can ask “What if” questions. Summary
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