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## Algebra I: Introduction

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### The core of algebra will be... Finding Indiana Jones. Finding the X variable. ... Click here to begin vocabulary review! Click to go back! ... – PowerPoint PPT presentation

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Title: Algebra I: Introduction

1
Algebra I Introduction
• Algebra I
• By Mrs. Lamb

2
What is algebra?
3
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!

4
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 to go back!
5
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.
6
Sorry! Try again!
• Take a closer look at some examples of variables!

Click on the book to see examples!
7
• 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!!

8
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.

9
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
10
Which one is NOT an expression?
• Click on the correct answer below.

Vocabulary Home
11
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!
12
Try again!
• Sorry! REMEMBERexpressions do N0T have equal
signs!

13
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
14
Great Job!
Vocabulary Home
15
Try again!
• Sorry! REMEMBERterms are separated by addition
and subtraction signs!

16
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
17
What is the constant in the following expression?
• Click over the correct term.

Vocabulary Home
18
Excellent!
• Constants do not have any variable in them!!

Vocabulary Home
19
What is the coefficient of
Vocabulary Home
20
Dont forgetcoefficients are the number in front
of the variable!
Oops!
21
YES!
• Coefficients are the numbers in front of the
variable (nothing else)!

Vocabulary Home
22
Try again!
• Sorry! REMEMBERconstants do N0T have variables!

23
Which group has all the same fruit?
Vocabulary Home
24
Nope!
25
Just like apples and oranges
• You may only combine terms that are alike! That
is, terms that have the same variable factors!

Vocabulary Home
26
Which group has all like terms?Click on the
correct group.
Group I
Group II
OR
Vocabulary Home
27
Very Good!
• Youve done a great job today! I hope that you
are excited to start the year!! Go algebra!!

Vocabulary Home
28
Look again!
• Sorry! REMEMBERlike terms MUST have the same
variable raised to the same exponents! Like