NCERT - 8 - Maths :: Squares and Square Roots

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Go To: NCERT-Mathematics-Grade 8

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Course Content / Subtopic list:


  1. Properties Of Square Numbers
  2. Some More Interesting Facts
  3. Finding The Square Of A Number
  4. Square Roots Of Decimals, Estimating Square Root


Lesson Plan

[Author - Kripa S]


Objective: Explain properties of squares and square roots

Subtopics to be covered:

- Squares from 1 - 20, square roots for numbers till 100

- Properties of squares- digits ending with 1,4,5,6,9,0

- Non perfect square numbers between two squares

- Square root by factorization method

- Square root by division method

Learning Outcome:

- Students can give the squares of any number

- Students can find the square root of any number by one of the two methods

- They know the properties to identify squares for a number



Videos

[Contributor - Rishi Mazumdar]

(Source - Khan Academy)

https://hi.khanacademy.org/math/in-eighth-grade-math/squares-square-roots (Hindi - Squares and Square Roots)

Images

[Author - Kripa S]


https://encrypted-tbn2.gstatic.com/images?q=tbn:ANd9GcS7R_r6CmNRIboxT4nWp_QJshlrbqwK6ZHQJY6RWcqT_o4C17Er (squares)

https://i0.wp.com/www.math-help-online.com/wp-content/uploads/2016/04/square-roots.jpg (square roots)

http://study.com/cimages/multimages/16/squares_and_roots.png (squares and square roots from 1 - 12)

http://3.bp.blogspot.com/-D7KFeG8JpT8/U3YwjRwcgNI/AAAAAAAABhA/11jyAsZQK60/s1600/How+to+find+Prime+Factors+in+Java.gif (prime factorization method)


Activities

[Author - Kripa S]


1. Make a chart of squares for numbers 1 to 20.

2. Make a chart of numbers whose square roots are from 1 to 20

3. Make teams of two students each, where one student will ask square of a number, and other student will ask square root of a number.


Additional Aids

[Author - Reshav Dey]


https://drive.google.com/open?id=0BzNF2YyqQxJ-Q1MxaUNxY0V6bnM (answerkey 1)

https://drive.google.com/open?id=0BzNF2YyqQxJ-elZTVFhqV0VrWm8 (answerkey 2)


Transliteration

[Contributor - Vikas Kumar]

Term Transliterated Term Translated Term
square स्क्वायर वर्ग
square root स्क्वायर रूट वर्गमूल
factorization फैक्टरआइज़ेसन गुणनखंडन
quotient कोसंट भागफल
unit digit यूनिट डिजिट इकाई अंक
perfect square परफेक्ट स्क्वायर पूर्ण वर्ग
natural number नेचुरल नंबर प्राकृत संख्या
consecutive integers कोंसएकुटिव इनटीजर्स क्रमागत पूर्णांक
odd number ओड नंबर विषम संख्या
even number इवन नंबर सम संख्या
decimal डेसीमल दशमलव
remainder रिमैंदर सेशफल
sequence सीक्वेंस अनुक्रम

Worksheets

[Author - Reshav Dey]


https://drive.google.com/open?id=0BzNF2YyqQxJ-bHIteFV4ZzlYQkU (worksheet 1)

https://drive.google.com/open?id=0BzNF2YyqQxJ-UUJHOHQ5SDdYaE0 (worksheet 2)



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