Circles

The Story of Mathematics

Philosophy of Mathematics

Teaching of Mathematics

Curriculum and Syllabus

Topics in School Mathematics

Textbooks

Question Bank

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Concept Map

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Textbook

ncert books

Class 8th Mathematics contain simple description and theorems on circles. To add textbook links, please follow these instructions to: (Click to create the subpage)

Additional Information

Useful websites

1. maths is fun A GOOD WEBSITE ON DEFINITIONS FOR CIRCLES
2. COOL MATH GIVES CLEAR AND EASY DEFINITIONS
3. OPEN REFERENCE CONTAINS FEW SIMULATIONS
4. WIKIPEDIA CONTAINS EXPLANATIONS FOR CIRCLES
5. KHAN ACADEMY CONTAIN GOOD VIDEOS
6. ARVIND GUPTA TOYS CONTAIN VERY GOOD BOOKS ON MATHEMATICS AND SCIENCE
7. nrich.maths.org Contain very good description of Pie

Reference Books

1. School Geometry By Hall and Stevens. Part3 pageno 143. Contains basic definitions and proofs given by Euclid.

Teaching Outlines

Introduction

The following is a background literature for teachers. It summarises the things to be known for a teacher to teach this topic more effectively . This literature is meant to be a ready reference for the teacher to develop the concepts, inculcate necessary skills and impart knowledge in Geometry - Circles from Class 6 to Class 10.

The first step is to understand how to define circles and related terms using geometric vocabulary. The next step is to understand what is Pi. That it is a constant and that for any circle the ratio of the circumference by the diameter is always a constant value Pi. The interesting properties of Pi – an irrational number can also be discussed here in the basic form. Ability for the child to do simple area and perimeter calculations. Next the learner should understand that the circle is a 2 dimensional plane figure and how to visualise solid 3-dimensional figures. What are the solid shapes that have a circle as a part of them. Mensuration – more complex area measurements which include circular shapes. Surface Area and Volume measurement of sold shapes such as cylinder, sphere and cone. Understand the properties of the circles by proving theorems deductively. Also acquire the skills of deductive proofs, understand that all the properties can be deduced from the axioms. Understand the relationship between lines and circles – secant and tangent

Concept #1 CIRCLE

Notes for teachers

Definition:A circle is a collection of all points in a plane, which are equidistant from a fixed point.

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