Algebra I: Introduction

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Algebra I Introduction

• Algebra I
• By Mrs. Lamb

Click here to begin!
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What is algebra?
Click here after video
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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!

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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!
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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.
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Sorry! Try again!

• Take a closer look at some examples of variables!

Click on the book to see examples!
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• 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!!

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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.

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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
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Which one is NOT an expression?

• Click on the correct answer below.

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Great Job!!

• Yes,
• is not an expression it is an equation!
  Equations are made from two equal expressions.
• Here are some more expressions

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Next vocabulary word!
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Try again!

• Sorry! REMEMBERexpressions do N0T have equal
  signs!

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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.

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1
2
3
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Great Job!
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Try again!

• Sorry! REMEMBERterms are separated by addition
  and subtraction signs!

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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.

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What is the constant in the following expression?

• Click over the correct term.

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Excellent!

• Constants do not have any variable in them!!

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What is the coefficient of
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Dont forgetcoefficients are the number in front
of the variable!
Oops!
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YES!

• Coefficients are the numbers in front of the
  variable (nothing else)!

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Try again!

• Sorry! REMEMBERconstants do N0T have variables!

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Which group has all the same fruit?
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Nope!
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Just like apples and oranges

• You may only combine terms that are alike! That
  is, terms that have the same variable factors!

Vocabulary Home
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Which group has all like terms?Click on the
correct group.
Group I
Group II
OR
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Very Good!

• Youve done a great job today! I hope that you
  are excited to start the year!! Go algebra!!

Vocabulary Home
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Look again!

• Sorry! REMEMBERlike terms MUST have the same
  variable raised to the same exponents! Like