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Data & Graphs · Grades 1–4

Data & Graphs Worksheets

Read the title, read the scale, then read the bar. Grade 1-4 graph worksheets with tally tables, pictographs, bar graphs, line plots, double bar graphs and stem-and-leaf plots, each with a source line, plus a graph to finish by hand.

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What it is

A graph shows data so you can compare it at a glance. Read the title, the labels and the key or scale before you read any numbers.

Why it matters

Ontario teaches data in every grade, and most of what children will ever read about numbers arrives as a graph. Reading the scale before the bars is the habit that stops a 1-picture-equals-2 pictograph from being read as half its real size.

How to do it

  1. Read the title and the source: what was counted, and who counted it?
  2. Read the labels, and the key or scale if there is one.
  3. Find the category the question asks about and read its count.
  4. To compare, subtract. To find a total, add.

Examples by level

  • Beginner
    Treasures found on our nature walkleavesacornschestnuts= 2 treasuresSource: our nature walk tally
    Use the pictograph about treasures found on our nature walk.Answera) 20 treasures b) acorns c) 18 treasures
  • Intermediate
    Paper lanterns made in class0246810121416Room 2Room 9Room 12Room 16ClassNumber of lanternsSource: art room records
    Make a bar graph from the table.Answera) See the graph. b) e.g. Paper lanterns made in class c) 7 lanterns
  • Advanced
    Stickers earned by each classRoom 4Room 7Room 14Room 15Room 17= 5 stickersSource: class reward charts
    Use the pictograph about stickers earned by each class.Answera) 8 pictures b) 25 stickers c) 120 stickers

Examples are generated by the same engine as the worksheets, so they're always mathematically correct. Built to avoid repeats, not reshuffle the same handful of questions.

Common mistakes

  • Counting pictures without reading the key.
  • Reading a bar against the wrong gridline on a scale of 2, 5 or 10.
  • Forgetting the title and labels when making a graph.
  • Mixing up the two groups on a double bar graph.

Tips

  • A graph needs a title, labels and a source. When you make one, add all three.
  • Check the key before counting pictures: one picture can stand for more than one.
  • The mode is the category with the greatest count.

For parents

Ask "what does one picture stand for?" before any counting.

For teachers

Every sheet names its source, matching D1.3's "proper sources, titles, and labels"; the build problem asks students to add the title themselves.

Key vocabulary

tally
a mark for each one counted, bundled in fives
pictograph
a graph that uses pictures
scale
how much each line or picture stands for
key
what one picture means
mode
the most common value or category
median
the middle value in order
mean
the total shared equally

Frequently asked questions

What is a pictograph?
A graph that uses pictures. The key says how many each picture stands for; a half picture stands for half that many.
What is the mode of a bar graph?
The category with the tallest bar, the one chosen most often.
How do you read a stem-and-leaf plot?
The stem is the tens digit and each leaf is a ones digit, so 3 | 4 7 means 34 and 37.

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