Difference between revisions of "NCERT - 8 - Maths :: Algebraic Expressions and Identities"
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Revision as of 10:44, 24 November 2017
Go To: NCERT-Mathematics-Grade 8
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[Author - Kripa S]
Objective: Revise algebraic concepts, learn operations on expressions, learn about identities
Subtopics to be covered:
- Revise terms, types of expressions
- Add, subtract polynomials
- Multiply two expressions using distributive property
- Standard identities
Learning Outcome:
- Students know to classify algebraic expressions
- They can add, subtract, multiply two expressions
- They can solve problems using standard algebraic identities
[Author - Kripa S]
http://epathshala.nic.in/wp-content/doc/book/flipbook/ClassVIIIFlipbook/0853-Ganit/Chapter_9/index.html (NCERT Hindi Medium)
http://epathshala.nic.in/wp-content/doc/book/flipbook/ClassVIIIFlipbook/0852-Mathematics/9/index.html (NCERT English Medium)
https://drive.google.com/open?id=0BzNF2YyqQxJ-bWl5WmczT2c4MWc (JEPC Board) (Hindi Medium)
[Author - Rishi Mazumdar]
(Source - Khan Academy) https://hi.khanacademy.org/math/in-eighth-grade-math/algebraic-expressions-identities (Hindi - Algebraic Expressions and Identities)
[Author - Kripa S]
http://3.bp.blogspot.com/-Kb8C_ggOpzg/U_rIoQpXw9I/AAAAAAAABfA/I-yRpR4d-eM/s1600/1.12.png (algebraic expressions and terms)
http://www.mathscore.com/math/free/lessons/mathTips/algebraicTerms.gif (terms of expressions)
http://3.bp.blogspot.com/-Kb8C_ggOpzg/U_rIoQpXw9I/AAAAAAAABfA/I-yRpR4d-eM/s1600/1.12.png (types of terms)
http://tutorial.math.lamar.edu/Classes/Alg/Polynomials_files/eq0002MP.gif (degree of expression)
http://www.aplustopper.com/wp-content/uploads/2016/09/Algebraic-Identities.png (identities)
http://s3.mnimgs.com/img/shared/discuss_editlive/2315393/2012_08_23_12_13_42/wumdmxbq_5989364557219336072.png ( formula to simplify expressions)
[Contributor - Apoorva Shetty]
1. The class should be divided in three groups xy2,x2y,x2y2.
2. Each child should be assigned the group randomly along with an integer co-efficient. (Eg. 9x2y2,6xy2 etc.)
3. They need to find their team-mates and tally the total sum of the group.
4. The teacher can verify this and whichever team can get the correct tally the fastest wins.
5. You can also divide the class in this way to form polynomial expressions and add/multiply them.
[Author - Dr Nikitha Narayan]
https://drive.google.com/open?id=0BzNF2YyqQxJ-a3pKYUp2bVVRRjA
[Author - Dr Nikitha Narayan]
https://drive.google.com/open?id=0BzNF2YyqQxJ-YjVOaEZRbkdWRzA
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