Template:Subst;square roots

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Concept Map
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square root
Suppose N is a natural number such that N=$$m^2$$. The number m is called square root of N we have $$m^2$$=mxm or $$(m)^2$$=-mx-m. Thus $$m^2$$ has 2 square roots, m and -m. Example 9=$$3^2$$ or $$(-3)^2$$.Thus both 3 and -3 are $$\sqrt9$$

= Textbook = 8 and 9 maths text books of Karnataka state To add textbook links, please follow these instructions to: ([ Click to create the subpage])

= 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. The students should understand that a perfect square number is the product obtained by multiplying same number with same sign twice. 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 factorisation 2. Finding square root of a number by division method 3. Finding square root of a decimal number

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

= Project Ideas =

= Fun corner =