NCERT - 8 - Maths :: Rational Numbers
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[Author - Kripa S]
Objective: Introduce rational numbers and properties of rational numbers
Subtopics to be covered:
- Define rational numbers
- Properties of rational numbers for the 4 operations (+, -, x, ÷)
- Additive inverse, Multiplicative inverse of a rational number
Learning Outcome:
- Students can identify the properties of a rational number based on any operation
- Students can solve problems on rational numbers (+, -, x, ÷)
[Author - Kripa S]
http://epathshala.nic.in/wp-content/doc/book/flipbook/ClassVIIIFlipbook/0853-Ganit/Chapter_1/index.html (NCERT Hindi Medium)
http://epathshala.nic.in/wp-content/doc/book/flipbook/ClassVIIIFlipbook/0852-Mathematics/1/index.html (NCERT English Medium)
https://drive.google.com/open?id=0BzNF2YyqQxJ-TDgyRFp0c1NoZk0 (JEPC Board) (Hindi Medium)
[Author - Kripa S, Rishi Mazumdar]
https://www.youtube.com/watch?v=9yvtLN_24G0 (Rational numbers - animated, English)
https://hi.khanacademy.org/math/in-math-by-grade/in-seventh-grade-math/in-seventh-grade-math/rational-numbers (Rational Numbers - Hindi)
https://hi.khanacademy.org/math/in-math-by-grade/in-eighth-grade-math/rational-numbers-1 (Khan Academy)
[Author - Kripa S]
http://4.bp.blogspot.com/_6c3ihz9hDWY/TPJsBrhS1JI/AAAAAAAAAAs/4jIhQR7xfYk/s1600/Rational+numbers.png (Rational Numbers)
'https://img.clipartfox.com/4260a4c3b12568c478b2a135136b9bbb_relationship-between-numbers-rational-numbers-definition_500-387.png (examples on rational numbers)
https://s3-ap-southeast-1.amazonaws.com/learnhive/lcards/Rational-Numbers-5220428eec40a.png (properties of rational numbers)
[Author - Kripa S]
1. Make two teams. One team will write a number on board, and other team will guess whether it is a rational number or not.
2. Make a chart of how rational numbers consists of integers, whole numbers, natural numbers.
[Author - Jyoti Joshi, Dr Nikitha Narayan, Gaurav Sharma]
https://drive.google.com/open?id=0BzNF2YyqQxJ-bUU2NzZybko4Q1U (answerkey 1)
https://drive.google.com/open?id=0BzNF2YyqQxJ-dTZxbklmZVJhZUE (Answer Key 2)
https://drive.google.com/open?id=0BzNF2YyqQxJ-NkZqU0Q2TmhFRVE (Answer Key 3)
[Author - Shachi Patel]
| Term' | Transliterated Term | Translated Term | |
| natural number | नेचुरल नंबर | प्राकृतिक संख्या | |
| integer | इन्टिजर | पूर्णांक | |
| whole number | होल नंबर | पूर्ण संख्या | |
| associative | अस्सोसिएटिव | जोड़नेवाला | |
| commutative | कंम्यूटेटिव | विनिमेय | |
| inverse | इनवर्स | श्लोक में | |
| reciprocal | रेसिप्रोकल | पारस्परिक | |
| number Line | नंबर लाइन | संख्या रेखा | |
| distributive | डिस्ट्रिब्यूटिव | विभाजित करनेवाला |
[Author - Jyoti Joshi, Dr Nikitha Narayan, Gaurav Sharma]
https://drive.google.com/open?id=0BzNF2YyqQxJ-YnNwWW82aDNnbXM (worksheet 1)
https://drive.google.com/open?id=0BzNF2YyqQxJ-VUkxR0tGVnUtWkk (Worksheet 2)
https://drive.google.com/open?id=0BzNF2YyqQxJ-TXpzOGFMakpObjQ (Worksheet 3)
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