# Introduction to Algebra

Lubna Naseem
40mins
Critical thinking, Problem Solving
Remember, Understand, Application
Yes 1. They learn to identify expression, equation, coefficients, constants and variables2. learn how to write an basic algebraic expression from phrase
Algebra is a language that has the ability to organize a rational procedure for handling this of chaos . It gives you the flexibility to layout the variables, design a procedure, and follow the procedure.
paper and pen

Introduction to Algebra:

Step1: Students are apprehensive of algebra because its abstract math where problems are defined using words rather than constant numbers. Begin the class telling children that today they will use a different form of language or vocabulary to solve questions in class.

Example:

Anu  has Rs100. Bimla has Rs12  less than her.  How much money does Bimla have?

Working:

Anu =Rs 100

Bimla= 100-12= Rs88

Rephrase the same example using variable:

Anu has some money.Bimla has Rs 12 less than her. How much money does Bimla have?

Working:

Lets say Anu has=Rs  n

Therefore Bimla has

n-12

You can do few more questions like this to explain them the new language they are learning.

Examples of phrases “twelve subtracted from a number” and “twelve less than a number”.  How can write an expression to represent them?

Step2: Once you are certain students have got a grasp of the new language, now is the time to introduce the new vocabulary expression or equation, and then identify coefficients, constants, and variables.

Step 3: Make students copy each example of the above vocabulary in the appropriate column in thier notebooks. Clarify misunderstanding or questions if any.

If none come then ask what is the coefficient of a and y to make sure students understand that in both cases the coefficient is one as in the given example: a-5b+7x+y

Encourage students to visualize what is going on

Some more Illustration to explain how word problems can be created into an algebraic equation:
You purchased 10 items from a shopping plaza, and now you need plastic bags to carry them home. If each bag can hold only 3 items, how many plastic bags you will need to accommodate 10 items?
##### Explanation :

The figure below illustrates the problem:
The different shapes inside the bags denote different items purchased. The number depicts the item number. We use simple algebraic formula x/y to calculate the number of bags.

x = Number of items purchased = 10

y = Capacity of 1 bag = 3

Hence,

10/3

= 3.33 bags ≈ 4 bags

So,we need 4 shopping bags to put 10 items.

“Learning algebra isn’t about acquiring a specific tool; it’s about building up a mental muscle that will come in handy elsewhere. You don’t go to the gym because you’re interested in learning how to operate a StairMaster; you go to the gym because operating a StairMaster does something laudable to your body, the benefits of which you enjoy during the many hours of the week when you’re not on a StairMaster.” — Steven Johnson

https://betterlesson.com/lesson/resource/1985787/unit-5-1-ttg-translating-algebraic-expressions-and-equations-docx?from=resource_image https://betterlesson.com/lesson/resource/1985791/5-1-class-practice-part-1-docx?from=resource_image
Using word phrases in different ways so that students can write the expression. example: “twelve subtracted from a number” and “twelve less than a number”. How can write an expression to represent them?
Accurate, Clearly explained, Knowledgeable, Methodical, Precise, Organized