Class 3 Maths - BIHAR
What's in a Name?
The chapter 'What's in a Name?' in Bihar Board Class 3 Mathematics introduces young students to the fundamental concepts of basic geometry, shapes, and counting patterns through fun, relatable naming exercises. Students learn to identify, name, and differentiate various 2D and 3D shapes like circles, squares, triangles, rectangles, and cylinders. This chapter forms the building block for spatial understanding and advanced geometry in later board exams. Mastering these basic shapes and their properties is essential for scoring high marks in the geometry section of the BSEB Class 3 mathematics final examinations.
Start Learning FreeKey Concepts
Point
A point is a tiny dot that shows an exact location and has no length, width, or height.
Line and Line Segment
A line goes on forever in both directions, while a line segment is a straight line with two fixed end points.
Flat Shapes (2D Shapes)
Shapes like triangles, squares, rectangles, and circles that are flat and drawn on a flat paper are called 2D shapes.
Solid Shapes (3D Shapes)
Objects that take up space, like cubes, spheres, cylinders, and cones, are called 3D or solid shapes.
Sides and Corners
Flat shapes are made of straight lines called sides and points where sides meet called corners or vertices.
Important Formulas
Board Exam Info
This chapter typically carries about 5 to 10 marks in the Bihar (BSEB) Class 3 Mathematics examinations. Common question types include matching shapes to their names, counting the number of sides and corners in given figures, drawing basic shapes, and identifying 3D objects from daily life.
Frequently Asked Questions
Does a circle have any corners?
No, a circle is completely round and has zero sides and zero corners.
What is the difference between a square and a rectangle?
A square has 4 equal sides, whereas a rectangle only has its opposite sides equal to each other.
Are a ball and a circle the same thing?
No, a circle is a flat 2D shape drawn on paper, while a ball is a solid 3D shape called a sphere.
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