What is Long? What is Round? (Shapes) — NCERT Solutions

Given: This is a hands-on activity.

Method:

1. Collect objects from around you — a ball, a pencil, a book, a coin, a bottle, a box, a rubber, etc.
2. Place each object on a slightly tilted surface (like a slanted book or a ramp).
3. Observe whether the object rolls (turns over and over) or slides (glides without turning).

Observations (examples):

• Ball → Rolls
• Pencil → Rolls
• Book → Slides
• Rubber/Eraser → Slides
• Water bottle → Rolls
• Pencil box → Slides

Conclusion: Objects with curved/round surfaces roll. Objects with flat surfaces slide.

Given: We need to find objects that can both roll and slide.

Answer: Yes! Some objects can both roll and slide.

Examples:

• A cylinder (like a tin can or a rolling pin): It rolls when placed on its curved side, but slides when placed on its flat circular face.
• A coin: It rolls when standing upright on its edge, but slides when lying flat.
• A pencil: It rolls on its curved body, but slides on its flat end.

Reason: Objects that have both flat faces and curved surfaces can roll as well as slide, depending on which face is touching the ground.

Given: We need to determine the movement of various objects.

Concept:

• Objects with curved/round surfaces → Roll
• Objects with flat surfaces → Slide
• Objects with both curved and flat surfaces → Roll as well as Slide

Completed Table (typical objects shown in Class 1 NCERT):

Explanation:

• Ball: Completely round → only rolls.
• Book: Flat rectangular faces → only slides.
• Pencil: Curved body (rolls) and flat ends (slides) → does both.
• Coin: Flat faces (slides) and circular edge (rolls when upright) → does both.
• Brick: All flat faces → only slides.
• Tin can/Cylinder: Curved body (rolls) and flat circular ends (slides) → does both.

Answer: Fill ✓ in the correct column for each object based on its shape.

This is a creative project activity.

Steps to make a box puppet:

1. Collect an empty cardboard box (shoe box or food box).
2. Make a horizontal slit (cut) across the front middle of the box so it can open and close like a mouth.
3. Draw or paste eyes, a nose, and a mouth on the front of the box.
4. You can add paper ears, hair, or a hat to make it look like a character.
5. Put your hand inside the box and move it to make the puppet 'talk'.
6. Choose characters from your favourite story (e.g., the lamb and the wolf from 'Wise Grandmother') and perform a puppet show.

Learning: This activity helps us understand 3D shapes (cuboid/box shape) and how flat cardboard can be folded into a box shape.

This is a hands-on exploration activity.

Steps:

1. Collect objects of different shapes — boxes (cuboid), cylinders (tin cans), balls, cones (birthday caps), etc.
2. Try stacking each type of object one on top of another to make a tower.
3. Observe which objects stack easily and make a tall, stable tower.

Observations:

• Boxes/Cuboids (books, matchboxes, shoe boxes): Stack very well because they have flat faces → make tall and stable towers.
• Cylinders (tin cans): Can be stacked but are less stable than boxes.
• Balls/Spheres: Cannot be stacked at all — they roll away.
• Cones: Cannot be stacked easily — they are pointed at the top.

Conclusion: Objects with flat faces (cuboid/box shape) make the tallest and most stable towers. Round objects (balls) cannot be used to make towers.

This is a creative hands-on activity.

Steps:

1. Take a lump of clay.
2. Roll it between your palms to make a round ball (sphere shape).
3. Roll it on a flat surface to make a long cylinder (like a pencil or rolling pin).
4. Press it flat to make a flat disc (like a coin).
5. Shape it into a box/cube by pressing all sides flat.
6. Roll it into a cone shape (like a birthday cap or ice-cream cone).
7. Use these basic shapes to create objects like a toy car, a house, an animal, a tree, etc.

Learning: This activity helps us understand and feel different 3D shapes — sphere, cylinder, cube, cuboid, and cone — with our hands.