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Grade 6 · Math · Unit 12 of 13

Line Graphs & Data

Collect data, draw line graphs and draw conclusions.

What your child practises

Practises choosing ways to collect data (questionnaires, experiments, observations), reading and labelling line graphs, finding the range, and drawing conclusions from a graph.

Nunavut Curriculum approved guide: Alberta Mathematics K–9 (2007), Statistics and Probability · collecting data, and creating and interpreting line graphs to draw conclusions

How we explain it

Children can open this short lesson before they practise.

  1. A line graph shows how something changes over time.
  2. Read the labels and scale on both axes first.
  3. A rising line means increasing. A falling line means decreasing.

Example: A plant is 4 cm on day 1 and 10 cm on day 4. How much did it grow? Find the two points on the line. 10 − 4 = 6. Answer: 6 cm

Sample questions

A taste of this unit. In the app, questions change every time and get easier or harder to match your child.

  1. Question 1

    A line graph shows 2 °C at 8 a.m., 5 °C at noon and 4 °C at 4 p.m. When was it warmest?

    • 4 p.m.
    • noon
    • 8 a.m.

  2. Question 2

    A line graph shows 30 at 1 p.m., 45 at 2 p.m. and 60 at 3 p.m. What is the pattern?

    • It goes down 15 each hour
    • It goes up 15 each hour
    • It stays the same

  3. Question 3

    In a table, the times are 1, 2, 3 and the heights are 3, 6, 9. Where is the point for time 2?

    • (2, 3)
    • (6, 2)
    • (2, 6)

  4. Question 4

    Which part of a line graph usually shows the time?

    • the legend
    • the horizontal axis
    • the title

  5. Question 5

    What does a line graph show best?

    • Where places are on a map
    • How something changes over time
    • How many are in each group

  6. Question 6

    Which is the best title for a graph of daily temperature in Brandon for one week?

    • Daily High Temperature in Brandon, One Week
    • Temperatures are fun
    • Graph

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