Year 4 Pictograms, Bar Charts and Time Graphs: lesson and practice

By the end of this chapter you will be able to

• Collect data with a tally chart and write the totals in a frequency table
• Read and draw pictograms, using a key where one symbol stands for 2, 5, 10 or more, and half symbols
• Read bar charts (vertical and horizontal) with scales going up in 1s, 2s, 5s, 10s, 20s and 50s, including values between the marks
• Draw and complete bar charts, and choose a sensible scale
• Read tables and two-way tables, and use the totals to find missing numbers
• Tell the difference between data you count and data you measure, and read and draw time graphs
• Solve “how many more”, “how many altogether” and “what is the difference” problems, and explain whether a statement about a chart is true

You should already know

• Counting in 2s, 5s and 10s (Years 1 to 3)
• Adding and subtracting numbers up to 4 digits (Chapter 2)
• Times tables up to 12 × 12 (Chapter 3)
• Telling the time and the 24-hour clock (Chapter 8)
• Reading a number line and scale (Chapters 1 and 7)
• Carroll diagrams and Venn diagrams (Chapter 9)

Where this leads

• Line graphs and tables, including timetables (Year 5)
• Pie charts, line graphs and the mean (Year 6)
• Averages and charts at GCSE