Year 6 Pie Charts, Line Graphs and the Mean: lesson and practice

By the end of this chapter you will be able to

• Read the per cent and the angle of a sector on a pie chart, and find the number in a sector when the total is known
• Work out the angle of each sector from a table, and check that the angles add up to 360 degrees
• Read values from a line graph, plot points on a scale and join them with straight lines
• Solve problems with line graphs: comparing two lines, totals, the biggest rise and the average change for each hour
• Find the mean of a set of values by dividing the total by the number of values
• Use the mean to find a total or a missing value, and say what the mean does and does not tell us

You should already know

• Fractions, and finding a fraction of an amount (Year 6, Chapter 4)
• Per cent and its equivalents to fractions (Year 6, Chapter 6)
• Reading and comparing a line graph, and the difference between two values (Year 5, Chapter 11)
• Reading bar charts and tables, and tallies (Year 4, Chapter 11)

Where this leads

• Using pie charts, line graphs, tables and averages together in the SATs revision chapter (Year 6, Chapter 13)