Original notes — ready
Chapter 15: Data Through Pictures
CBSE (NCERT, English Medium) • Class 5 • Mathematics • Book: Math Mela
Data Through Pictures — EG's own notes, in simple words
Book: Math Mela (CBSE, Class 5) | Chapter 15 | Medium: English
Diagram (labels are printed on the image): A pictograph of fruit rows (apple, banana, pear). A general teaching picture about data; the picture counts are examples, and the fruits here are examples, not the chart on this page.
Children making a data chart. A general picture about collecting data.
What the chapter is about
This chapter is about data — information collected as numbers — and showing it through pictures. A pictograph uses pictures to stand for numbers: for example, one apple picture = 10 children who like apples.
To read a pictograph, count the pictures and multiply by the scale. If there are 4 apple pictures and each stands for 10 children, then 40 children like apples.
Data can also be shown in tables and bar graphs. Pictures make data easy to read at a glance, and they help us compare groups quickly: which is most, which is least, and by how much.
Data helps us make decisions. A shopkeeper who sees that mangoes sell most will stock more mangoes; a teacher who sees which game children like most can plan games better. Pictures make such decisions quick and clear.
What you should learn
Always read the key (scale) of a pictograph first. Without the key, the pictures tell you nothing about numbers.
Key Terms
- Data — Collected information, often as numbers.
- Pictograph — Data shown with pictures.
- Scale (key) — What one picture stands for.
- Table — Data arranged in rows and columns.
- Bar graph — Data shown with bars of different lengths.
- Most popular — The choice picked by the largest number of people.
Remember
- Pictograph: pictures stand for numbers.
- Read the key first, then count pictures.
- Value = number of pictures × key.
- Pictures make comparison quick and easy.
Exam Tip / Common Mistake
Common mistake: counting pictures as children (4 pictures = 4 children). If the key says one picture = 10 children, 4 pictures = 40 children.
Chart / Table: Favourite fruits (one picture = 10 children)
| Fruit | Pictures |
|---|---|
| Apple | 4 pictures = 40 children |
| Banana | 3 pictures = 30 children |
| Mango | 6 pictures = 60 children |
| Orange | 2 pictures = 20 children |
Think and try
Ask 10 friends their favourite fruit and draw a pictograph with one picture = 2 friends. Which fruit is most popular? How many pictures did it need, and why?
Practice set — try it yourself
- A pictograph key says one star = 5 books. 6 stars are shown. How many books?
Hint: Multiply pictures by key. - Which fruit is liked most in the table above?
Hint: Compare the values. - How many more children like mango than banana?
Hint: Subtract the values. - Draw a pictograph for: red 20, blue 30, green 10 (one picture = 10).
Hint: Count pictures for each colour. - Why are pictures useful for showing data?
Hint: Think about quick reading and comparison.
How to use this page: Read the summary, say the Key Terms in your own words, then try the practice set without looking. Ask your teacher or parent to check your answers.