NCERT - 6 - Maths :: Playing with Numbers
Go To: NCERT-Mathematics-Grade 6
Course Content / Subtopic list:
- Factors & Multiples
- Prime & Composite Numbers
- Divisibility Of Numbers & Divisibility Rules
- Common Factors & Common Multiples, Prime Factorization
- Highest Common Factor & Lowest Common Multiple
Lesson Plan
[Contributor - Kripa S]
Objective: Introduce Types of Numbers and Divisibility Tests to group numbers
Subtopics to be covered:
- Revise Multiples, Factors, Prime and Composite numbers, Odd and Even numbers
- Prime Numbers till 50
- Divisibility by 2, 3, 4, 5, 6, 8, 9, 10
- How to find LCM and HCF for given set of numbers
Learning Outcome:
- Students can group numbers from a given set as asked: Odd, Even, Prime, Composite, Multiples, Factors
- Students can identify if a given number passes any of the divisibility tests
- Students can find LCM and HCF for a set of numbers
Videos
[Contributor - Kripa S, Rishi Mazumdar]
https://hi.khanacademy.org/math/in-sixth-grade-math/playing-numbers (Khan Academy)
https://www.youtube.com/watch?v=-gdcPL9fhS4 (prime vs composite numbers)
Images
[Contributor - Kripa S]
https://encrypted-tbn1.gstatic.com/images?q=tbn:ANd9GcQtJmzmpF7EfciVOD1OY2RoLwybvcPCVA-tFJViKdCQkQkRfJ3R ( example of prime, composite numbers)
http://4.bp.blogspot.com/-HgqgeVgDWAU/UyeFcFYPv9I/AAAAAAAAC0Q/uXLZCwWOalY/s1600/hundreds+chart+activities+atue.001.png ( prime and composite numbers)
https://s-media-cache-ak0.pinimg.com/736x/8c/97/f4/8c97f4fcc932d5b371b54dfe6cae378c.jpg (LCM example)
Activities
[Contributor - Kripa S]
1. Stand on the ends of the classroom making a huge circle. Start counting from 1. When it is time to say 4, say Meow. Again at 8 say Meow. If you say the number (table of 4) you are out. Let us see who wins. Repeat this game for table of 6, 7, 8 etc.
2. Play the same game for odd and even numbers too. Use different sounds for fun (Bow-bow, quack, brrrrrr etc)
3. Make number cards from 1 - 50. Place them all in order. Play in pairs. One student picks a number card. Other student has to pick all the cards that are factors of the number picked. If there are no factors, the student can't pick any card. Then the second student picks a card and first student will pick all factor cards. Continue till all the cards are taken up. The student with maximum cards wins.
Additional Aids
[Contributor - Sushant Raut]
https://drive.google.com/open?id=0B4m07xnDF8JpY1ZrMnVham55ekE (answerkey1)
https://drive.google.com/open?id=0B4m07xnDF8JpUHhfbFhFajc5RHc (answerkey 2)
Transliteration
| Term' | Transliterated Term | Translated Term | |
| factors | फाक्टर्स | गुणनखंड | |
| quotient | कोशिएंट | भागफल | |
| divisor | डिवाइज़र | विभाजक | |
| multiple | मल्टीपल | गुणजों | |
| prime number | प्राइम नंबर | अभाज्य संख्या | |
| composite number | कंपोज़िट नंबर | भाज्य संख्या | |
| divisibility | डिविसिबिलिटी | विभाज्यता | |
| remainder | रिमाइंडर | शेष | |
| highest common factor | हाईएस्ट कॉमन फक्टर | महत्तम समापवर्तक | |
| least common multiple | लीस्ट कॉमन मल्टीप्ल | लघुतम समापवर्त्य |
Worksheets
[Contributor - Sushant Raut]
https://drive.google.com/open?id=0BzNF2YyqQxJ-b0psTDM0SmhxZm8 (Worksheet 1)
https://drive.google.com/open?id=0BzNF2YyqQxJ-NnA2cng2eW5URFU (Worksheet 2)
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