NCERT Class 1 Maths (Joyful Mathematics) · Chapter 2
What is Long? What is Round?
Long and round things, matching everyday objects to shapes, and things that roll, slide, or do both.
📌 What you’ll learn in this chapter
- Finding long things and round things
- Matching objects to shapes: ball, cap, glass, and box
- Things that roll and things that slide
- Building with shapes
🍩 Let’s Begin: The Kitchen Hunt
Ammi asks Zoya to find round and long things in the kitchen. Zoya finds a round roti, a round plate, a long belan (rolling pin), and a long spoon. “The belan is long and it rolls!” she laughs.
🔵 Part 1: Shapes Around Us
| Shape like a… | Other things with this shape |
|---|---|
| ⚽ Ball | Orange, laddoo, marble, globe |
| 🎉 Birthday cap | Ice-cream cone, funnel, top of a temple |
| 🥛 Glass | Pipe, candle, drum, bottle |
| 📦 Matchbox | Book, brick, lunch box, almirah |
🛝 Part 2: Roll or Slide?
- Roll: things with round, curved sides roll (a ball or a marble).
- Slide: things with flat sides slide (a book or a box).
- Both: a glass or a pencil can roll on its side and slide on its flat end.
💡 Remember
Curved surface → rolls. Flat surface → slides. Both kinds of surfaces → can do both!
⚠️ Common mistake
Thinking a carrom striker rolls. ❌ A striker is flat and slides. It only rolls if it stands on its edge!
✏️ Practice Time
Try these on your own first, then check your answer below each question.
Q1. Does a ball roll or slide?
✅ AnswerRoll
Q2. Name one thing shaped like a matchbox.
✅ AnswerFor example, a book, a brick, or a lunch box.
Q3. Name one thing that can roll and slide.
✅ AnswerFor example, a glass, a pencil, or a candle.
📘 NCERT Textbook Activity Help
Hints and answers for the activities in the textbook, page by page. Try each one yourself before looking at the answer!
Pages 10–11 · Look aroundLong and round
✅ AnswerRound things to draw: ball, bangle, plate, wheel, coin · Long things to draw: pencil, stick, snake, ruler, rope. (Some things, like a glass, can be called both, so explain why you chose!)
Pages 12–13 · Match the shapesSimilar shapes
✅ AnswerMatch each object with the one of the same shape.
C. Like a ball: orange, laddoo, globe · D. Like a cap: cone, funnel · E. Like a glass: drum, pipe, candle · F. Like a matchbox: book, box, brick. Tick the matching picture in each row.
Pages 14–15 · Wise grandmotherC. Like a ball: orange, laddoo, globe · D. Like a cap: cone, funnel · E. Like a glass: drum, pipe, candle · F. Like a matchbox: book, box, brick. Tick the matching picture in each row.
Why did the dholak roll?
✅ AnswerA dholak has a curved body, so it can roll. The path to the grandmother’s house went downhill, so it rolled very fast and the wolf couldn’t catch it.
Pages 16–17 · Roll or slideR and S
✅ AnswerWrite R on round things (ball, marble, bangle on its edge) and S on flat things (striker, book, eraser, box).
Both roll and slide: glass, bottle, pencil, candle, drum. They roll on their curved side and slide on their flat side.
Both roll and slide: glass, bottle, pencil, candle, drum. They roll on their curved side and slide on their flat side.
👨👩👧 Tips for Parents
- Make a ramp with a board and test which toys roll and which slide.
- Play “I spy something round” around the house.
- Build a tower with boxes, bottles, and balls. Which shape stacks best?