Difference between revisions of "Template:Subst;square roots"
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== '''square root''' == | == '''square root''' == | ||
| − | Suppose N is a natural number such that N=<math> | + | Suppose N is a natural number such that N=<math>m^2</math> . The number m is called square root of N |
| − | we have <math>m^2</math>=mxm or (-m)x(-m)=<math>(-m)^2</math> thus <math>m^2</math> has 2 square roots, | + | we have <math>m^2</math>=mxm or (-m)x(-m)=<math>(-m)^2</math> thus <math>m^2</math> has 2 square roots, m and -m example 9=<math>3^2</math> or <math>(-3)^2</math>.thus both 3 and -3 are <math>\sqrt9</math> |
[[File:square number.p | [[File:square number.p | ||
Revision as of 12:50, 30 September 2013
| Philosophy of Science |
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Concept Map
Error: Mind Map file SQUARE ROOTS .mm not found
square root
Suppose N is a natural number such that N= . The number m is called square root of N we have =mxm or (-m)x(-m)= thus has 2 square roots, m and -m example 9= or .thus both 3 and -3 are [[File:square number.p
Textbook
8 and 9 maths text books of Karnataka state
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Additional information
Useful websites
you can play with perfect square numbers from 1 to 1000 & play games with numbers please click here
To estimate the square root of a number click here
To play quiz on square root of a number click here
Reference Books
This text book contains activities for students to understand square and square root NCERT 8th std maths text book of chapter 6
Teaching Outlines
Concept #1
'perfect square-numbers'
Learning objectives
1. Finding perfect square-numbers
2. Recognising perfect square-numbers in a given group of numbers
3. perfect square-number patterns
4. differentiating between perfect square-numbers & other numbers.
Notes for teachers
Patterns & games of perfect square-number may be given to students
Activity No 1
On a paper make 3 columns like N , NxN & product .give some numbers under column N and students can fill the other 2 columns
- Materials/ Resources needed :- One white paper with 3 columns likeN , NxN &product.Pen or pencil to every student
- Prerequisites/Instructions, STUDENTS SHOULD PERFECTLY KNOW ABOUT MULTIPLICATION OF NUMBERS
- Multimedia resources INTERNET ,
- Website interactives/ links/ simulations Inthis web site you can play with perfect square number s from 1 to 1000 & play games with numbers.
- Process/ Developmental Questions
1) the side of a square is 15 cm .what is area of square ?
2) 121 balls are arranged in square pattern .How many balls in each row? - Evaluation
1) squqre of 15 =........
2)144 =........... writte in the form n2 - Question Corner
Activity No 2
- Materials/ Resources needed :-
- Prerequisites/Instructions,
- Multimedia resources
- Website interactives/ links/ simulations
- Process/ Developmental Questions
- Evaluation
- Question Corner
Activity No 3
- Materials/ Resources needed :-
- Prerequisites/Instructions,
- Multimedia resources
- Website interactives/ links/ simulations
- Process/ Developmental Questions
- Evaluation
- Question Corner
Concept #2
SQUARE ROOT OF A NUMBER
Learning objectives
1. Finding square root of a perfect square number by prime facterisation
2. Finding square root of a number by division method
3. Finding square root of a decimal number
Notes for teachers
Activity No 1
- Materials/ Resources needed :-
- Prerequisites/Instructions,
- Multimedia resources
- Website interactives/ links/ simulations
- Process/ Developmental Questions
- Evaluation
- Question Corner
Activity No 2
- Materials/ Resources needed :-
- Prerequisites/Instructions,
- Multimedia resources
- Website interactives/ links/ simulations
- Process/ Developmental Questions
- Evaluation
- Question Corner