Solving for a Variable
_A variable is an unknown number represented in mathematics by a letter, such as x. A good tutorial on variables can be found at http://abstractmath.org
/MM/MMVarSub.htm. After you visit that website, watch this video: |
__If the video above is not working, you need to download the Adobe Flash player.
PRACTICE
After reading the information on this website, practice writing equations using variables: http://www.mathgoodies.com/lessons/vol7/expressions.html
ASSESS
Quiz yourself: http://regentsprep.org/REgents/math/ALGEBRA/AV1/PAlgRep.htm
Now that you understand variables, let's move on to solving equations with variables. Your first step is solving equations with one variable on one side of the equal sign.
PRACTICE
After reading the information on this website, practice writing equations using variables: http://www.mathgoodies.com/lessons/vol7/expressions.html
ASSESS
Quiz yourself: http://regentsprep.org/REgents/math/ALGEBRA/AV1/PAlgRep.htm
Now that you understand variables, let's move on to solving equations with variables. Your first step is solving equations with one variable on one side of the equal sign.
Why do we need to be able to solve equations with variables? You can use variables to find something you need, such as what grade you need to get on your final exam to get an A in your class. Below is a good interview about why we need algebra from http://www.npr.org/.
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_Copyright © Lisa Sheridan, 2011. All Rights Reserved.
No original material may be copied from this website without
explicit permission from the author.
No original material may be copied from this website without
explicit permission from the author.