NCERT - 8 - Maths :: Comparing Quantities

Go To: NCERT-Mathematics-Grade 8

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• Course Content
• Textbook
• Teaching Learning Resources

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

[Author - Kripa S]

http://epathshala.nic.in/wp-content/doc/book/flipbook/ClassVIIIFlipbook/0853-Ganit/Chapter_8/index.html (NCERT Hindi Medium)

http://epathshala.nic.in/wp-content/doc/book/flipbook/ClassVIIIFlipbook/0852-Mathematics/8/index.html (NCERT English Medium)

https://drive.google.com/open?id=0BzNF2YyqQxJ-bEx6YVBSZUlkOU0 (JEPC Board) (Hindi Medium)

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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