NCERT - 8 - Maths :: Comparing Quantities

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Go To: NCERT-Mathematics-Grade 8

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Course Content / Subtopic list:


  1. Recalling Ratios And Percentages
  2. Finding Discounts, Profit And Loss
  3. Sales Tax/Value Added Tax/Gst
  4. Compound Interest & Deducing A Formula For Compound
  5. Rate Compounded Annually/Half Yearly, Applications

Lesson Plan

[Author - Kripa S]


Objective: To revise ratio, percentage and their applications

Subtopics to be covered:

- Ratio, Percentage and their conversion

- Profit, Loss, Discount

- Tax

- Compound Interest

Learning Outcome:

- Students can convert ratio to percentage and solve sums

- Students can solve problems based on percentage (example - Profit, Loss, Discount, SP, CP)



Videos

[Contributor - Rishi Mazumdar]

(Source - Khan Academy)

https://hi.khanacademy.org/math/in-math-by-grade/in-seventh-grade-math/in-seventh-grade-math/comparing-quantities (Hindi - Comparing Quantities)

Images

[Author - Kripa S]


http://study.com/cimages/videopreview/4qfs3doxw6.jpg (what is ratio)

http://www.edpax.com/media/managed/large/ratio_proportion_2nd_41.png (ratio example 1)

http://www.rpdp.net/mathdictionary/english/vmd/images/e/equivalentratios.gif (ratio example 2)

https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcTHyX4m1veFeiPuZymoJGrmR8_G1Hi8qZKBzfUE66geuwYD0ry0 (proportion example 1)

https://image.pbs.org/poster_images/assets/PROPORTION.jpg.resize.710x399.jpg (proportion example 2)

https://www.mathsisfun.com/algebra/images/proportion-1a.gif (proportion with numbers)

http://images.tutorvista.com/cms/images/113/equivalent-ratios.png (equivalent ratio)

https://qrfellows.files.wordpress.com/2013/11/139202.jpg (percentage in daily use)

https://media.gcflearnfree.org/ctassets/topics/231/half-measuring-cup3.png (conversion of fraction to percentage)


Activities

[Contributor - Shiyamali. S]


https://drive.google.com/open?id=0BzNF2YyqQxJ-WE1yNkNLX2xsbzg (Activity 1)

https://drive.google.com/open?id=0BzNF2YyqQxJ-LTRRV3Fmd2FDMmM (Activity 2)

Additional Aids

[Contributor - Shreya Sood]

https://drive.google.com/open?id=1ZJQ4Xb-uaBmCvmIY_61XLXPsi_mHbhNr

Transliteration

[Contributor - Vikas Kumar]

Term Transliterated Term Translated Term
amounts अमाउंटस राशियाँ
compare कॉम्पएयर तुलना
Ratio रेश्यो अनुपात
percentage परसेंटेज प्रतिशत
discount डिस्काउंट बट्टा
estimation एस्टीमेशन आकलन
loss लोस हानि
profit प्रॉफिट लाभ
buy बाई खरीद
sell सेल बिक्री
cost price कॉस्ट प्राइस क्रय मुल्य
sell price सेल प्राइस विक्रय मुल्य
rate रेट दर
value वैल्यू मुल्य
compound interest कंपाउंड इंटरस्ट चक्रवृद्धि ब्याज
simple interest सिंपल इंटरस्ट साधारण ब्याज
rate of interest रेट ऑफ इंटरस्ट वार्षिक ब्याज
half yearly हाफ इयरली अर्धवार्षिक
formula फ़ॉर्मूला सूत्र

Worksheets

[Contributor - Akash Garg]

https://drive.google.com/open?id=1p0GyHNwgrMYUhiReDdKVVwDXiJUxLeA2


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