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QQuanta KidsBy IIT & ISB Alumni
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Concept 1 of 7

Pictographs & Bar Graphs: Visual Counts

1

Today's big idea

Bar graph: read each bar against the scale, and read a pictograph against its key.

Not every scale starts at zero, so check the numbers before you trust a bar height.

2

How it works

👀 What's going on?

Your class votes on a favourite colour and the tally sheet is a mess of marks. Draw it as bars and the winner jumps straight out at you. A graph turns counting into looking.

💡 Here's the trick

Bar graph · scale matters51015Red9Blue14Green6Yellow11More? Subtract. Total? Add all bars.

Look at the graph above. Each bar's height is read against the scale up the side, so Blue is 14. A pictograph does the same job with pictures, and its key tells you what one picture is worth.

🪄 How to do it

  1. 1.Read the scale on the graph above, or read the key on a pictograph.
  2. 2.Multiply pictures by the key value, or read each bar's top.
  3. 3.Add for a total, or subtract for how many more.

✍️ Try it

A pictograph key says one star stands for 6 books. A row shows 5 stars, so how many books? Then: bars show Hindi 24 and Tamil 15. How many more Hindi books?

Five stars at 6 books each is 5 × 6 = 30 books. For the bars, 24 − 15 = 9 more Hindi books.

⚠️ Watch out

You might be thinking every bar graph starts its scale at zero. Many do not. Check the numbers up the side, because a bar twice as tall is not always twice as many.

🌟 Why this matters

Match reports, weather charts and shop noticeboards all show their numbers as bars, so you read them in one glance. A pictograph does the same on a poster for younger children.
Exam tip: Read the key before the pictures, because the key changes from one question to the next.

3

Watch me solve one

Quanta solves it

“Watch how I think through one of these — then you try.”

THE PROBLEM

“Pictograph key: 1 flag = 6 runs. A player has 4 flags. How many runs?”

  1. 1

    Read the key

    Each flag stands for 6 runs. 🏏

  2. 2

    Count the symbols, then multiply

    4 × 6

  3. 3

    Compute

    24

  4. 4

    Answer ✓

    The player scored 24 runs.

Now you try one — same steps, different story 👇

4

See it in action

⚡ Time to play!

Same chart, different question. Read the QUESTION first, then scan the bars against the scale.

Books Read This Term

50403020100

Maths

Science

English

Hindi

QUESTION 1 OF 3

Tap the subject with the MOST books (the tallest bar).

5

Quick check

✅ VERIFICATION

A pictograph uses 1 flag for 8 runs. A row shows 3 flags and a half flag. How many runs is that?

⚡ Finish the activity above first to answer.

Keep going!

Up next: Line Graphs

Up = increase · Down = decrease · Flat = steady.

Concept 2 of 7