NCERT Joyful Mathematics, Class 1, textbook pages 10–17
How to teach Class 1 Maths Chapter 2, What is Long? What is Round?, at home
Shapes that roll, slide and stack, taught with things you already have at home: a 10-minute activity, a game for the week, a 5-day plan and the mistakes to watch for.
NCERT Class 1 Maths Chapter 2 What is Long? What is Round?: what it teaches
Children meet solid shapes by handling them. The real lesson is that the shape of a thing decides what it can do: roll down a slope, slide across it, or stack in a tower.
Why it matters later. Knowing which shapes roll, slide and stack is the start of geometry. In Class 2 and 3 your child will name cubes, cylinders, cones and spheres and count their faces; this chapter builds the feel for them.
See it: this chapter in pictures
You need
- a ball or orange
- a steel glass or bottle
- a matchbox or biscuit packet
- a paper cone or party cap
- a tray propped on two books as a ramp
Tonight’s 10 minutes
- Do a shape hunt in the kitchen: bring back two round things and two long things. Let your child explain why each one counts.
- Before each test on the ramp, ask “Will it roll, slide or both?” Then test it. The guess matters as much as the answer.
- Build the tallest tower you can with mixed objects. Talk about which shapes stayed up and which kept falling.
Words to use
- round
- long
- flat
- curved
- rolls
- slides
- stacks
Watch for
- Thinking only balls roll. Lay the glass on its side and it rolls; stand it up and it slides. What touches the ground decides it.
- Calling a cone a triangle. Let them feel the point and the round bottom. A triangle is flat; a cone is not.
What it sounds like at home
A short example of the conversation. Your words will differ; the questions are what matter.
YouWill this steel glass roll or slide down the tray?
Your childSlide.
YouLet’s try it standing up. … Now lie it on its side.
Your childIt rolled!
YouSo what decides it?
Your childWhich part is touching.
A game for this week: Ramp race
- Prop a tray on two books to make a ramp.
- Each player picks an object from the house and says “roll”, “slide” or “both”.
- Let it go. A correct guess scores a point.
- Change the ramp height and see if anything changes.
A 5-day plan, 10 minutes a day
- Day 1Kitchen shape hunt: two round, two long.
- Day 2Ramp test with five objects.
- Day 3Tower building: which shapes stack?
- Day 4Match objects to the ball, the glass, the box, the cone.
- Day 5Ramp race game.
Everyday moments to practise
- Unloading groceries: which packets stand up, which roll away?
- At the park: why does a ball roll down the slide faster than a child slides?
- Stacking steel tiffins versus stacking oranges.
- Rolling a rolling pin versus pushing a chopping board.
Quick check
Ask these at the end of the week. Tap to see the answer.
Which rolls: an orange, a book, a bottle lying down?
The orange and the bottle lying down.
Name one thing that can roll and slide.
A bottle, a can, a glass or a pencil.
Which is best for the bottom of a tower: a ball or a box?
The box, because its flat faces stay put.
Ready for the next chapter when your child…
- Can say which of three objects will roll before testing.
- Knows a glass rolls on its side and slides standing up.
- Picks flat-faced objects for the bottom of a tower.
Activities, wording and illustrations are Mathify Kids’ own, following the topics of NCERT’s Joyful Mathematics (Class 1). See the full Class 1 parent guide for every chapter.
Questions parents ask
What shapes are taught in Class 1 NCERT maths?
Round and long objects, and how they behave: things like balls, glasses, boxes and cones, and whether they roll, slide or stack. Formal names come later.
Should my child learn words like cylinder and sphere now?
You can use them casually, but the book focuses on describing and handling shapes, not naming them.
Which everyday things both roll and slide?
A bottle, a can, a glass, a pencil and a rolling pin: they roll on the curved side and slide on a flat end.