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Algebra I Introduction

- Algebra I
- By Mrs. Lamb

Click here to begin!

What is algebra?

Click here after video

What more can be said?

- The core of algebra will be
- Finding Indiana Jones.
- Finding the X variable.
- Watching goofy videos.
- Learning your ABCs.
- Click above on the correct answer!

Great! Do you know what these are?

- Term
- Expression
- Coefficient

- Like terms
- Constant
- Equation

Before you can begin writing expressions and

solving equations you need to understand the

vocabulary!

Click here to begin vocabulary review!

Click to go back!

What is a variable? Is it

- A symbol, usually a letter, that represents one

or more numbers.

- B.Many different numbers, letters and operations

put together with an equal sign.

A

B

Click to go back to video.

Click here for examples of variables.

Sorry! Try again!

- Take a closer look at some examples of variables!

Click on the book to see examples!

- This is the variable used most often!

- These are also variables. You can use any letter

you like!! - Well find out more on how to choose a variable

right away in this course!!

Very Good!!You find variables by solving

equations!

- What is an equation?
- This is the core of this course!
- An equation is a mathematical sentence that uses

an equal sign. It connects two algebraic

expressions.

These are expressions

- Expressions are mathematical phrases that can

include numbers (1, 2.5, ½), variables (x, n, a)

and operation symbols(,-) - Expressions are made up of one or more terms.

Vocabulary Home

Which one is NOT an expression?

- Click on the correct answer below.

Vocabulary Home

Great Job!!

- Yes,
- is not an expression it is an equation!

Equations are made from two equal expressions. - Here are some more expressions

Vocabulary Home

Next vocabulary word!

Try again!

- Sorry! REMEMBERexpressions do N0T have equal

signs!

Terms in an expression

- A term is a number, a variable, or the product of

a number and one or more variables. They are

separated by addition and subtraction signs. - How many terms are in the expression above?

Click on the correct button below.

Vocabulary Home

1

2

3

Great Job!

Vocabulary Home

Try again!

- Sorry! REMEMBERterms are separated by addition

and subtraction signs!

Constants and Coefficients

- A constant is a term that has no variable
- 3, 1/3 and 6.74 are examples of constants
- A coefficient is a numerical factor or the of a

term. For example, 2 is the coefficient of the

term 2x.

Vocabulary Home

What is the constant in the following expression?

- Click over the correct term.

Vocabulary Home

Excellent!

- Constants do not have any variable in them!!

Vocabulary Home

What is the coefficient of

Vocabulary Home

Dont forgetcoefficients are the number in front

of the variable!

Oops!

YES!

- Coefficients are the numbers in front of the

variable (nothing else)!

Vocabulary Home

Try again!

- Sorry! REMEMBERconstants do N0T have variables!

Which group has all the same fruit?

Vocabulary Home

Nope!

Just like apples and oranges

- You may only combine terms that are alike! That

is, terms that have the same variable factors!

Vocabulary Home

Which group has all like terms?Click on the

correct group.

Group I

Group II

OR

Vocabulary Home

Very Good!

- Youve done a great job today! I hope that you

are excited to start the year!! Go algebra!!

Vocabulary Home

Look again!

- Sorry! REMEMBERlike terms MUST have the same

variable raised to the same exponents! Like