Revision as of 08:44, 4 September 2013

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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= $M^{2}$ . The number M is called square root of M we have $m^{2}$ =mxm or (-m)x(-m)= $(-m)^{2}$ thus $m^{2}$ has 2 square roots, m;m and m example 9= $3^{2}$ or $(-3)^{2}$ .thus both 3 and -3 or ${\sqrt {9}}$

This shows pictorial representation of squares and square roots

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

In 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 #

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.
5. Finding square root of a perfect square number by prime facterisation and division method
6. Finding square root of a decimal number

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

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Materials/ Resources needed :- One white paper with 3 columns likeN , NxN &product.Pen or pencil to every student
Prerequisites/Instructions, if any
Multimedia resources
Website interactives/ links/ simulations
Process/ Developmental Questions
Evaluation
Question Corner

Revision as of 08:43, 4 September 2013 (view source) aujavalagi (talk \| contribs) (→‎Textbook) ← Older edit		Revision as of 08:44, 4 September 2013 (view source) aujavalagi (talk \| contribs) (→‎Textbook) Newer edit →
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	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;m and m example 9=<math>3^2</math> or <math>(-3)^2</math>.thus both 3 and -3 or <math>\sqrt9</math>		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;m and m example 9=<math>3^2</math> or <math>(-3)^2</math>.thus both 3 and -3 or <math>\sqrt9</math>
	[[File:square number.png\|200 px\|left]] <br> This shows pictorial representation of squares and square roots		[[File:square number.png\|200 px\|left]] <br> This shows pictorial representation of squares and square roots
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