NCERT - 7 - Maths :: Algebraic Expressions

Course Content
Textbook
Teaching Learning Resources

Course Content / Subtopic list:

How Are Expressions Formed,Terms Of An Expression
Like And Unlike Terms, Monomials, Binomials, Trinomial
Addition And Subtraction Of Algebraic Expressions
Finding The Value Of An Expression

[Contributor - Kripa S]

http://epathshala.nic.in/wp-content/doc/book/flipbook/Class%20VII/0757-Ganit/Chap-12/index.html (NCERT Hindi Medium)

http://epathshala.nic.in/wp-content/doc/book/flipbook/Class%20VII/0756-Mathematics/Chapter%2012/index.html (NCERT English Medium)

https://drive.google.com/open?id=0BzNF2YyqQxJ-Y3FaLXRIUmx1VXc (JEPC Board) (Hindi Medium)

Lesson Plan

[Contributor - Kripa S

Objective: Explain Algebraic expressions and how to find their values

Subtopics to be covered:

- Terms, factors, coefficients of an expression

- Types of expressions - monomial, binomial, trinomial, polynomial

- Addition, Subtraction of algebriac expressions

- Formulae written as an expression

Learning Outcome:

- Students know the types of expressions and how to identify them

- They can solve simple expressions using addition, subtraction operation

- They can find value of an expression by substitution

Videos

[Contributor - Rishi Mazumdar]

https://hi.khanacademy.org/math/in-seventh-grade-math/algebraic-expressions (Khan Academy)

Images

[Contributor - 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)

Activities

[Contributor - Kripa S]

1.Quiz: I have some chocolates with me. I gave 4 chocolates to my sister. I have 17 chocolates left. How many did I have in the beginning? Make an equation.

2. How many pens/ sticks you would need to make alphabet A? How many sticks you would need to make 10 As ? Repeat this rule for alphabets E, H, V, I

3. Play in pairs. One student ask the other to think of a number. Multiply the number by 2, then add 2, multiply 5, then add 5, multiply 10, then add 10. Ask the friend for answer. You can guess what the number is. Trick is ignore the units and ten's place digits. Consider the left digits, subtract 1 and that is the number thought by the student. Make an equation of this game