NCERT - 7 - Maths :: Exponents and Powers

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Go To: NCERT-Mathematics-Grade 7


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Course Content / Subtopic list:


  1. Exponents
  2. Laws Of Exponents, Examples Using The Laws Of Exponents
  3. Decimal Number System,Expressing Large Numbers In powers

Lesson Plan

[Contributor - Kripa S]


Objective: Revise exponents and their properties

Subtopics to be covered:

- Properties of exponents

- Laws of exponents

- Find value for given exponents

- Simplify big numbers by use of exponential powers to standard form

Learning Outcome:

- Students can solve problems based on the properties and law learnt

- Students can simplify a big number to its standard form


Videos

[Contributor - Rishi Mazumdar]


https://hi.khanacademy.org/math/in-seventh-grade-math/exponents-powers (Khan Academy)

Images

[Contributor - Kripa S]


https://www.mathsisfun.com/algebra/images/exponent-8-2.svg (exponents)

http://www.coolmath.com/sites/cmat/files/images/01-exponents-definition-03.gif (example of exponents)

http://algebraiistudyguide.weebly.com/uploads/2/3/8/7/23870057/7103459_orig.jpg (property of exponents)

https://s-media-cache-ak0.pinimg.com/originals/4f/7f/ad/4f7fad9824c75173900289730286a364.png (laws of exponents)

https://proprofs-cdn.s3.amazonaws.com/images/QM/user_images/1592567/6698436854.gif (examples of laws of exponents)

Activities

[Contributor - Kripa S]


1. The distance between Hyderabad and Delhi is 1674.9 km by rail. How would you express this in centimeters? Also express this in the scientific form (in the power of 10)

2. Make a team of 2 students. Write chits with numbers from 0 to 5. In a team, each student picks one chit and gets a number. Support team 1 got the numbers 2 and 4. The first student has to find value of 24 and the other student has to find value of 42. Whoever gets the higher value wins the game. Repeat the steps for 5-6 times. Add up the answers to find who is the winner in the team.

Additional Aids

[Contributors - Anmol Gupta, Anuradha Srinivasan]


https://drive.google.com/open?id=0B4m07xnDF8JpenRQRzAtaXVQVjA (answer key 1)

https://drive.google.com/open?id=0BzNF2YyqQxJ-eS1laklMYW44cWc (answer key 2)


Worksheets

[Contributor - Anmol Gupta, Devendra Mishra]


https://drive.google.com/open?id=0B4m07xnDF8JpV3R4M0tsaWV1NDA (worksheet 1)

https://drive.google.com/open?id=0BzNF2YyqQxJ-T2tqNWhaSGg0TFk (Worksheet 2)


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