Collecting information is only the first step. Tally marks organise it, a pictograph shows it as pictures, and a bar graph shows it as height — three tools for the same job.
A tally mark is one line for each item — grouped in fives, with the fifth line crossing the other four, so you can count in fives instead of ones.
Favourite fruit survey — Class 6A
| Fruit | Tally | Count |
|---|---|---|
| 🍎 Apple | |||| || | 7 |
| 🍌 Banana | |||| |||| | 10 |
| 🥭 Mango | |||| |||| |||| | 15 |
| 🍊 Orange | |||| | 4 |
In a pictograph, every picture stands for a fixed number of things — always check the key first.
Cars sold this week
Key: 🚗 = 5 cars
A bar graph uses the HEIGHT of each bar to show a number — no key needed, just an axis.
Books borrowed from the library
Mon
30
Tue
50
Wed
20
Thu
40
12 IMO-style questions using the tables and graphs above. 🍀